If your Volkswagen or Audi has stored P0017, the most important thing to understand is that this code does not automatically mean the camshaft position sensor has failed.
P0017 is a crankshaft-to-camshaft correlation fault. In generic OBD-II terminology, it means:
P0017 – Crankshaft Position – Camshaft Position Correlation (Bank 1, Sensor B)
The engine control module (ECM/ECU) has determined that the relationship between the crankshaft position and the camshaft position associated with Sensor B is outside the permitted range.
On many VW/Audi four-cylinder engines, Sensor B is associated with the exhaust camshaft. However, this should not be treated as a universal rule for every Volkswagen or Audi engine.
The exact camshaft designation, measuring values, adaptation limits, and diagnostic procedure depend on the:
- Engine family
- Engine code
- Model year
- ECU
- ECU software
- Timing architecture
- VVT/camshaft-adjustment system
That is why a proper P0017 diagnosis should answer one question:
Why does the ECU see the crankshaft and camshaft positions out of correlation?
The answer may involve mechanical timing, VVT operation, oil supply, sensors, wiring, or an installation problem following engine work.
What Does P0017 Actually Mean?
The crankshaft and camshaft must maintain a precise relationship while the engine is running.
The crankshaft determines piston position.
The camshaft controls valve opening and closing.
The ECU monitors the position signals from these components and, on engines equipped with variable valve timing, also monitors the commanded and actual camshaft position.
If the measured relationship falls outside the ECU’s permitted range, P0017 can be stored.
This is why the word correlation is so important.
P0017 does not directly tell you:
- The camshaft sensor is bad
- The crankshaft sensor is bad
- The timing chain is stretched
- The camshaft adjuster has failed
- The VVT solenoid has failed
It tells you that the ECU has detected a disagreement between expected and measured engine-position relationships.
That distinction can prevent unnecessary parts replacement.
P0017 vs. P0016
P0016 and P0017 are closely related codes.
| DTC | Generic Description | Typical Association |
|---|---|---|
| P0016 | Crankshaft Position – Camshaft Position Correlation, Bank 1 Sensor A | Often intake camshaft |
| P0017 | Crankshaft Position – Camshaft Position Correlation, Bank 1 Sensor B | Often exhaust camshaft |
| P0018 | Crankshaft Position – Camshaft Position Correlation, Bank 2 Sensor A | Bank 2 |
| P0019 | Crankshaft Position – Camshaft Position Correlation, Bank 2 Sensor B | Bank 2 |
On many four-cylinder applications, Sensor A is associated with the intake camshaft and Sensor B with the exhaust camshaft.
However, always verify the actual component designation for the specific engine.
This becomes especially important on:
- V6 engines
- V8 engines
- TDI engines
- Different generations of EA888
- Other engines with multiple camshaft-adjustment systems
Symptoms of P0017
P0017 symptoms can vary considerably depending on the underlying problem.
Possible symptoms include:
- Check Engine Light
- Rough idle
- Poor acceleration
- Reduced engine performance
- Hard starting
- Extended cranking
- Engine stalling
- Reduced fuel economy
- Poor throttle response
- Cold-start rattle
- Additional camshaft-related DTCs
- Additional VVT-related DTCs
Some vehicles may drive normally while storing P0017 intermittently.
Others may experience severe drivability problems.
The operating conditions under which P0017 appears are therefore diagnostically important.
What Causes P0017?
There are five major diagnostic areas to investigate.
1. Mechanical Timing
Mechanical timing is one of the most important possibilities.
Potential causes include:
- Timing-chain wear
- Timing-chain stretch
- Failed or weak chain tensioner
- Damaged chain guides
- Incorrectly installed timing chain
- Incorrect timing-belt installation
- Incorrect camshaft timing
- Incorrect camshaft-adjuster installation
- Damaged timing components
A mechanical timing problem changes the physical relationship between the crankshaft and camshaft.
However:
P0017 does not prove that the timing chain is stretched.
A timing-chain diagnosis should be supported by camshaft adaptation/phase data, symptoms, timing inspection, and the applicable factory specification.
2. Camshaft Adjuster and VVT Problems
Many VW/Audi engines use variable valve timing to alter camshaft position according to engine operating conditions.
Depending on the engine, the system may include:
- Camshaft adjuster
- Oil control valve
- Oil passages
- Camshaft position sensor
- ECU control circuitry
- Hydraulic oil pressure
Possible problems include:
- Sticking camshaft adjuster
- Faulty adjustment valve
- Restricted oil passage
- Contaminated oil
- Insufficient oil pressure
- Mechanical wear
- Electrical control problems
Ross-Tech identifies camshaft adjustment valves, wiring, mechanical camshaft-adjustment problems, and oil pressure as areas to investigate for related VAG camshaft-adjustment faults. (Ross-Tech Wiki)
3. Engine Oil and Oil Pressure
Camshaft adjustment systems can depend heavily on engine oil.
Check:
- Oil level
- Oil condition
- Correct oil specification
- Oil filter condition
- Possible sludge
- Possible contamination
- Oil pressure when required
Depending on the vehicle and engine, Volkswagen oil specifications can include VW 502 00, VW 504 00, or VW 507 00.
Do not assume that one specification is correct for every VW/Audi engine.
Use the specification prescribed for the particular engine and vehicle.
Important Oil-Pressure Consideration
A normal-looking oil-pressure measurement at idle does not necessarily prove that the VVT system is receiving the correct oil flow under every operating condition.
Camshaft adjustment can depend on:
- Oil pressure
- Oil temperature
- Engine RPM
- Oil viscosity
- Oil-control-valve operation
- Internal oil passages
Therefore, when VVT operation is suspected, use the engine-specific factory diagnostic procedure rather than relying on one static oil-pressure reading.
4. Camshaft or Crankshaft Sensor Problems
Electrical problems can also cause a correlation fault.
Potential causes include:
- Failed camshaft position sensor
- Failed crankshaft position sensor
- Damaged wiring
- Poor connector contact
- Corroded terminals
- Poor ground
- Power-supply problem
- Signal interference
- Damaged trigger/reluctor component
But remember:
The sensor should not be blamed simply because the fault code mentions camshaft position.
A perfectly functioning sensor can accurately report a camshaft that is mechanically out of position.
5. Incorrect Assembly After Engine Repair
Repair history is one of the most valuable clues when diagnosing P0017.
If the fault appeared immediately after:
- Timing-chain replacement
- Camshaft replacement
- Cylinder-head work
- Engine replacement
- Camshaft-adjuster replacement
- Long-block replacement
then inspect the previous repair before replacing unrelated parts.
Check:
- Mechanical timing
- TDC position
- Camshaft alignment
- Adjuster installation
- Oil passages
- Internal sleeves/components
- Fasteners
- Chain/belt routing
- Tensioner installation
Volkswagen published a technical tip specifically addressing P0017 after camshaft-adjuster repair or long-block replacement, demonstrating that assembly details can cause the fault. (NHTSA)
How to Diagnose P0017
A practical diagnostic sequence is:
Scan → Freeze Frame → Oil → Measuring Values → Specified vs. Actual → VVT → Mechanical Timing → Sensors/Wiring → Verification
The exact order can change depending on the symptoms and repair history.
Step 1 – Perform a Complete VCDS Auto-Scan
Start with:
VCDS → Auto-Scan
Save the complete scan before clearing any faults.
Look for:
- P0017
- P0016
- P0011
- P000A
- Other camshaft faults
- Crankshaft-position faults
- VVT faults
- Misfire faults
- Oil-pressure-related faults
The combination of faults can be much more informative than P0017 alone.
For example:
P0017 alone
requires a broad investigation.
But:
P0016 + P0017 + additional timing-related faults
can increase suspicion of a common mechanical timing problem.
Similarly:
P0017 + VVT performance fault
can increase suspicion of a camshaft-adjustment problem.
Step 2 – Examine Freeze-Frame Data
Before clearing P0017, save the freeze-frame information when available.
Look for:
- Engine RPM
- Engine load
- Coolant temperature
- Oil temperature
- Vehicle speed
- Battery voltage
- Relevant camshaft values
The goal is to determine:
When did the ECU detect the correlation problem?
Was it:
- Immediately after startup?
- During cold operation?
- At idle?
- During acceleration?
- Under high load?
- At higher RPM?
- After the engine warmed up?
This information can significantly narrow the investigation.
Cold-Start vs. Hot-Engine P0017
P0017 Mainly During Cold Start
If P0017 occurs primarily during cold starts, investigate:
- Oil pressure development
- Oil level
- Oil condition
- Camshaft adjuster behavior
- Timing-chain tensioner
- Mechanical timing
- Camshaft adaptation
A pronounced cold-start timing rattle combined with a correlation fault deserves particular attention.
P0017 Appears at All Temperatures
If P0017 returns immediately or remains present regardless of engine temperature, investigate:
- Mechanical timing
- Camshaft position
- VVT position
- Sensor signals
- Wiring
- Camshaft adjuster
Intermittent vs. Permanent P0017
This distinction is also important.
Intermittent P0017
An intermittent fault may require investigation of:
- Wiring
- Connectors
- Sensor signal quality
- VVT response
- Oil condition
- Operating conditions
- Temperature-related behavior
Freeze-frame data becomes particularly valuable.
Permanent P0017
A fault that returns immediately may increase suspicion of:
- Mechanical timing
- Persistent VVT failure
- Sensor/signal fault
- Incorrect component installation
- Significant camshaft offset
This does not prove the cause, but it helps establish diagnostic priority.
Step 3 – Check Engine Oil
Check the oil before disassembling the engine.
Verify:
- Correct oil level
- Correct oil specification
- Oil condition
- Filter condition
- Contamination
- Sludge
- Oil pressure when appropriate
If oil pressure is suspected, perform the pressure test under the engine-specific conditions specified by the manufacturer.
Do not assume that a single idle measurement completely evaluates VVT oil supply.
Step 4 – Check VCDS Measuring Values
This is one of the most valuable parts of the diagnosis.
Go to:
01 – Engine → Measuring Values
On older VAG ECUs, traditional Measuring Value Blocks (MVBs) may be available.
Ross-Tech documents the older camshaft-related groups as follows:
- MVB 090 – camshaft adjustment information
- MVB 091 – intake camshaft adjustment
- MVB 093 – camshaft adaptation/phase-position information
- MVB 094 – intake camshaft adjustment testing
- MVB 096 – exhaust camshaft adjustment testing
These are examples from older VAG measuring-block structures and should not be treated as universal P0017 measuring blocks.
The specific fields and available groups depend on the ECU.
UDS Vehicles and Advanced Measuring Values
Newer VW/Audi vehicles commonly use UDS/ODX/ASAM-based communication.
In these controllers, traditional MVB group numbers may not apply.
VCDS instead exposes controller data through Advanced Measuring Values and factory-defined identifiers.
Ross-Tech specifically notes that UDS controllers use the factory-defined data objects rather than traditional adaptation-channel structures. (Ross-Tech)
Therefore, instead of blindly searching for a particular MVB, search the Advanced Measuring Values for terms such as:
- Camshaft
- Camshaft adaptation
- Camshaft phase
- Camshaft position
- Exhaust camshaft
- Intake camshaft
- Specified
- Actual
- Adjustment
- Bank 1
What About IDE00189 and IDE00190?
You may encounter online references to specific IDE numbers for camshaft-related values.
The problem is that IDE identifiers are ECU/data-object specific.
Do not publish or use an IDE number as a universal P0017 parameter unless it has been verified for the exact ECU/engine combination.
The correct procedure is:
Identify the ECU → identify the available camshaft data objects → record the relevant specified/actual/adaptation values → compare them with the applicable factory information.
This is much safer than copying an IDE number from a different vehicle.
Step 5 – Compare Specified vs. Actual Position
Now determine whether the camshaft is responding to the ECU’s commands.
Look for:
Specified/Commanded Position
versus
Actual Position
If actual position follows specified position appropriately, the VVT system may be functioning.
If actual position consistently fails to follow the commanded position, investigate:
- Oil supply
- VVT control valve
- Camshaft adjuster
- Mechanical timing
- Wiring
- Mechanical restriction
Do Not Use a Universal P0017 Tolerance
This is one of the most important points in this entire article.
There is no universal VW/Audi P0017 tolerance.
Different engines and ECUs can use different thresholds.
Volkswagen documentation for different applications demonstrates different P0017 thresholds, including examples around ±11.01° crankshaft rotation and ±15.01° crankshaft rotation.
Therefore:
Do not use ±4°, ±5°, ±8°, ±11°, or any other number as a universal VW/Audi P0017 limit.
The correct value depends on the engine and ECU.
Use the factory specification for the exact application
Camshaft Adaptation and Timing-Chain Wear
Timing-chain wear is often discussed as “chain stretch.”
In practice, technicians may use camshaft adaptation or phase-position data to evaluate whether the camshaft-to-crankshaft relationship has changed.
The value is generally expressed as an angular position relative to the crankshaft.
This means that timing-chain wear is not simply diagnosed as:
Code present = chain stretched
Instead, evaluate:
- Camshaft adaptation value
- Engine operating condition
- Factory limit
- Timing-chain condition
- Tensioner condition
- Mechanical timing
- Related DTCs
An adaptation value outside the manufacturer’s specification can provide important evidence, but it should be interpreted using the exact engine-specific procedure.
Step 6 – Test the VVT System
If the measuring values suggest a camshaft-adjustment problem, investigate the VVT system.
Depending on the ECU, VCDS may provide:
- Output Tests
- Basic Settings
- Measuring Values
- Adaptation functions
For example, Ross-Tech’s guidance for certain camshaft-adjustment faults includes checking the adjustment valve, wiring, performing appropriate tests/basic settings, and checking oil pressure. (Ross-Tech Wiki)
However:
Do not assume that Basic Setting 001, 003, 004, or any other numbered routine applies to every VW/Audi engine.
Basic Setting numbers are controller/application dependent.
Likewise, traditional adaptation-channel numbers should not be blindly applied to UDS controllers. Ross-Tech specifically warns that UDS controllers use a different adaptation structure. (Ross-Tech)
Always use the Basic Setting or adaptation procedure documented for the exact ECU and engine.
Step 7 – Verify Mechanical Timing
If the data indicates a persistent mechanical correlation problem, verify the engine’s mechanical timing.
Depending on the engine, this may require:
- Crankshaft locking tool
- Camshaft locking tool
- Timing-chain tools
- Timing-belt tools
- TDC verification
- Manufacturer-specific service information
Examples of VAG timing tools include T10068 and T10355 on certain applications, but these tools are not universal.
The correct tool depends on:
- Engine family
- Engine code
- Timing architecture
- Model year
Do Not Choose Timing Tools by Engine Family Alone
Even within EA888, tool requirements can vary between generations and applications.
Therefore, a better rule is:
Engine code first → factory procedure second → timing tools third.
Do not attempt to lock a camshaft using an improvised tool merely because it physically fits.
Timing Verification Procedure
The exact procedure is engine-specific, but the diagnostic objective is generally to verify:
- Cylinder #1 at the correct TDC position
- Crankshaft alignment
- Camshaft alignment
- Timing-chain/belt alignment
- Camshaft-adjuster position
- Tensioner position
- Correct installation of timing components
If mechanical timing is incorrect, repair it according to the manufacturer procedure.
Do not rely exclusively on VCDS to prove mechanical timing.
Step 8 – Inspect Sensors and Wiring
If mechanical timing and VVT operation appear correct, investigate the electrical system.
Inspect:
- Camshaft sensor
- Crankshaft sensor
- Wiring
- Connectors
- Power supply
- Grounds
- Signal circuits
- Connector terminals
- Trigger/reluctor components
Use the factory wiring diagram and electrical specifications for the exact vehicle.
If testing proves the sensor or wiring is defective, then repair or replace the affected component.
Engine-Specific Considerations
EA888 Gen 1 and Gen 2
Earlier EA888 engines use timing-chain and camshaft-adjustment systems that differ from later generations.
Relevant diagnostic areas can include:
- Timing-chain condition
- Tensioner
- Camshaft adaptation
- VVT operation
- Oil supply
- Camshaft adjustment valve
Do not automatically apply Gen 3 measuring values to Gen 1/2.
EA888 Gen 3
The EA888 Gen 3 family introduced further changes in engine architecture and ECU strategy.
Ross-Tech maintains separate information for EA888 Gen 3 and notes that factory repair information should be used alongside diagnostic information. (Ross-Tech Wiki)
On these vehicles, Advanced Measuring Values can be particularly useful.
Search by functional terms rather than assuming that older MVB numbers will be available.
EA113 2.0T FSI
The EA113 2.0T FSI has a different architecture from the chain-driven EA888 generations.
Do not automatically apply:
- EA888 timing procedures
- EA888 VVT assumptions
- EA888 measuring values
- EA888 timing tools
Identify the engine code first.
2.5L Five-Cylinder Engines
The 2.5L five-cylinder applications deserve separate consideration because their camshaft arrangement and timing system differ from the four-cylinder engines commonly discussed in VW diagnostic guides.
The generic P0017 definition still applies, but the physical component designated Sensor B and the appropriate VCDS parameters must be verified for the specific engine.
This is another reason not to describe Sensor B simply as “the exhaust camshaft” without qualification.
V6 Engines
V6 engines introduce an additional layer of complexity because they have:
- Bank 1
- Bank 2
- Multiple camshafts
- Multiple camshaft sensors
- Multiple adjustment systems on some engines
Do not diagnose P0017 by assuming the four-cylinder Sensor A/B arrangement.
Identify:
Bank → Sensor → Camshaft → ECU parameter
before replacing components.
V6 TDI and Other Diesel Applications
TDI engines can use significantly different timing and camshaft arrangements.
The same generic P0017 code does not guarantee the same physical diagnosis.
For diesel applications, verify:
- Engine code
- Timing architecture
- Camshaft designation
- ECU
- Applicable factory diagnostic procedure
Volkswagen documentation also demonstrates that camshaft-related faults can occur on TDI applications with engine-specific diagnostic procedures. (NHTSA)
Hybrid and e-tron Applications
Hybrid and plug-in hybrid VW/Audi vehicles can introduce additional diagnostic considerations.
Engine operation may be intermittent because the internal-combustion engine can shut down while the vehicle remains powered.
This can affect:
- Freeze-frame interpretation
- Engine operating conditions
- Test-drive verification
- Engine-start behavior
- Diagnostic routines
For hybrid/e-tron applications, use the manufacturer-specific diagnostic procedure rather than assuming that a conventional gasoline-engine workflow is sufficient.
Engine-Specific Quick Reference
| Engine/Application | Primary Diagnostic Focus | VCDS Strategy |
|---|---|---|
| EA888 Gen 1/2 | Timing chain, camshaft adjustment, oil supply | Engine-specific MVB/Advanced Values |
| EA888 Gen 3 | Camshaft adjustment, adaptation, mechanical timing | Advanced Measuring Values commonly useful |
| EA113 2.0T FSI | Camshaft adjustment and timing | Engine-specific MVBs |
| 2.5L 5-cylinder | Engine-specific camshaft/timing architecture | Verify ECU data objects |
| V6 gasoline | Bank-specific camshaft relationship | Identify Bank 1/2 and Sensor A/B |
| V6 TDI | Engine-specific timing/camshaft system | Factory procedure required |
| Hybrid/e-tron | Engine-specific timing plus hybrid operating state | Manufacturer-specific procedure |
This table is an orientation guide—not a specification table.
Real-World Diagnostic Scenarios
Case 1 – P0017 Immediately After Timing-Chain Repair
Symptoms
- Engine starts
- Check Engine Light illuminates
- P0017 appears immediately after timing work
Diagnostic Priority
Do not replace the camshaft sensor first.
Check:
- TDC
- Crankshaft timing
- Camshaft timing
- Chain alignment
- Tensioner installation
- Camshaft adaptation
- VVT operation
A fault appearing immediately after timing work makes an installation/timing issue a high-priority possibility.
Case 2 – P0017 After Camshaft-Adjuster Replacement
If P0017 appears after camshaft-adjuster replacement, inspect the repair.
Check:
- Adjuster installation
- Oil passages
- Internal sleeves/components
- Fasteners
- Timing alignment
- Required adaptation
Volkswagen specifically documented a P0017 condition following camshaft-adjuster repair or long-block replacement on certain applications. (NHTSA)
Case 3 – P0017 During Cold Start
Symptoms
- Normal warm operation
- Brief startup rattle
- P0017 stored after cold start
Diagnostic Priorities
Investigate:
- Oil pressure development
- Oil condition
- Camshaft adjuster
- Timing-chain tensioner
- Camshaft adaptation
- Mechanical timing
Case 4 – Intermittent P0017 With No Drivability Symptoms
If the vehicle drives normally and P0017 appears intermittently:
Focus on:
- Freeze-frame conditions
- Wiring
- Connectors
- Sensor signals
- VVT response
- Temperature-related behavior
- Oil condition
Intermittent faults require more attention to operating conditions than simply checking whether a component works when stationary.
Case 5 – P0016 and P0017 Together
If both P0016 and P0017 are present, investigate possible common causes.
These may include:
- Mechanical timing
- Timing-chain condition
- Tensioner
- Camshaft adjustment
- Oil supply
- Crankshaft position signal
- Camshaft position signals
The presence of multiple correlation faults can make a system-level diagnosis more appropriate than replacing one sensor.
Case 6 – P0017 After Engine Replacement
If P0017 appears immediately after a long-block or engine replacement:
Check:
- Engine timing
- Camshaft adjuster installation
- Wiring connections
- Sensors transferred from the old engine
- Ground connections
- Oil passages
- Required adaptations
- ECU compatibility
Do not assume that because the replacement engine runs, its mechanical timing is necessarily correct.
Common Diagnostic Mistakes
Mistake #1 – Replacing the Camshaft Sensor Immediately
P0017 does not identify the failed component.
Better approach:
Determine why the ECU sees an incorrect correlation.
Mistake #2 – Replacing the Timing Chain Immediately
P0017 does not prove chain stretch.
Better approach:
Use adaptation/phase data, symptoms, related faults, and mechanical inspection.
Mistake #3 – Using a Universal Timing Tolerance
There is no universal VW/Audi P0017 tolerance.
Better approach:
Use the specification for the exact engine and ECU.
Mistake #4 – Treating MVB 091/093 as Universal
These groups are useful on applicable older ECUs but are not universal.
Better approach:
Determine whether the vehicle uses traditional MVBs or UDS Advanced Measuring Values.
Mistake #5 – Copying IDE Numbers From Another Vehicle
An IDE identifier seen on one ECU should not automatically be assumed to apply to another.
Better approach:
Use the actual Advanced Measuring Values available from the vehicle’s ECU.
Mistake #6 – Performing an Unverified Basic Setting
A Basic Setting number from another engine may perform an entirely different function—or may not exist.
Better approach:
Follow the exact engine/ECU procedure.
Mistake #7 – Ignoring Oil
VVT operation can depend on oil pressure and flow.
Better approach:
Verify oil level, specification, condition, and pressure when appropriate.
Mistake #8 – Ignoring Repair History
A P0017 appearing immediately after timing or camshaft work is a major diagnostic clue.
Better approach:
Review the previous repair before replacing unrelated components.
Post-Repair Verification
Repairing the suspected component is not the final step.
The repair should be verified.
1. Clear Fault Memory
Clear the stored DTC after completing the repair.
2. Perform Required Adaptations
If the engine-specific procedure requires a camshaft adaptation or Basic Setting, perform it using the correct procedure.
Do not assume that every VW/Audi engine requires the same adaptation.
3. Start the Engine
Observe:
- Startup behavior
- Idle quality
- Mechanical noise
- Camshaft position
- VVT response
4. Recheck Measuring Values
Verify that actual and specified positions behave appropriately.
5. Test Drive
Monitor:
- Engine performance
- VVT behavior
- Engine temperature
- DTC status
- Misfires
- Camshaft values
6. Perform a Final Scan
After the test drive, perform another complete scan.
The objective is not simply:
“The Check Engine Light stayed off.”
The objective is:
“The ECU no longer detects the original correlation problem.”
How Long Does P0017 Diagnosis Take?
Diagnostic time varies significantly depending on the vehicle and cause.
Typical rough ranges might be:
| Diagnostic Situation | Approximate Time |
|---|---|
| Initial scan and basic inspection | 0.5–1 hour |
| VCDS measuring-value diagnosis | 0.5–2 hours |
| Electrical/sensor diagnosis | 1–3 hours |
| VVT/oil-pressure investigation | 1–3+ hours |
| Mechanical timing verification | 2–6+ hours |
| Timing-chain repair | Several additional labor hours |
These are planning estimates, not manufacturer labor times.
Actual labor depends heavily on the engine, vehicle, access, diagnostic findings, and repair procedure.
What Can P0017 Repairs Cost?
Repair costs vary dramatically.
| Possible Repair | Typical Relative Cost |
|---|---|
| Connector/wiring repair | Low–Moderate |
| Camshaft sensor | Low–Moderate |
| VVT control valve | Moderate |
| Oil-system repair | Moderate |
| Camshaft adjuster | Moderate–High |
| Timing-chain/tensioner repair | High |
| Internal engine repair | Very High |
Parts prices and labor rates vary significantly by vehicle and location.
A useful rule is:
Diagnose first; price the repair second.
Replacing a $50–$150 sensor because of a correlation code can become expensive if the actual problem is mechanical timing.
Likewise, replacing a complete timing system without evidence can turn a diagnostic problem into an unnecessary major repair.
Tools for P0017 Diagnosis
Basic Diagnostic Tools
- VCDS
- Battery charger/maintainer
- Digital multimeter
- Basic hand tools
- Flashlight
- Manufacturer wiring diagrams
Advanced Diagnostic Tools
Depending on the problem:
- Mechanical oil-pressure gauge
- Oscilloscope
- Timing-light equipment where applicable
- Compression tester
- Leak-down tester
- Engine-specific timing tools
Mechanical Timing Tools
VAG timing tools such as T10068 and T10355 are examples of specialized tools used on certain applications.
They should never be assumed to apply to every VW/Audi engine.
Always verify the required tools using the engine-specific service procedure.
When Should You Stop Driving?
P0017 does not automatically mean the vehicle must be towed.
However, stop driving and investigate immediately if P0017 is accompanied by:
- Severe timing-chain noise
- Metallic engine noise
- Sudden loss of power
- Severe rough running
- Hard starting
- No-start condition
- Multiple cam/crank correlation codes
- Evidence of incorrect mechanical timing
- Fault immediately following timing work
A significant mechanical timing problem can potentially cause serious engine damage.
When mechanical timing is suspected, continued driving may increase the risk.
P0017 Diagnostic Decision Tree
P0017 STORED
|
v
COMPLETE VCDS AUTO-SCAN
|
v
SAVE FREEZE-FRAME DATA
|
v
CHECK ENGINE OIL
|
v
CHECK CAMSHAFT DATA VALUES
|
+-----------+-----------+
| |
v v
Actual follows Actual does NOT
specified position follow specified
| |
v v
Check intermittent Investigate VVT
sensor/wiring faults |
v
Check oil supply
|
v
Check adjuster
|
+----------+----------+
| |
v v
VVT operates VVT fails
correctly |
| v
v Diagnose VVT,
Verify mechanical oil & adjuster
timing
|
+--------+--------+
| |
v v
Timing correct Timing incorrect
| |
v v
Sensors/wiring Repair timing
/signals
|
v
Perform required
adaptation/basic setting
|
v
Clear DTC
|
v
Test drive
|
v
Final Auto-Scan
P0017 Quick Reference
Before Replacing Any Parts
Check:
- Complete Auto-Scan
- Freeze-frame data
- Engine oil level
- Correct oil specification
- Oil condition
- Camshaft actual position
- Camshaft specified position
- Camshaft adaptation/phase position
- VVT response
- Mechanical timing
- Sensors
- Wiring
- Recent repair history
P0017 Diagnostic Checklist
Electronic
- Scan ECU
- Record all DTCs
- Save freeze-frame
- Check sensor signals
- Inspect connectors
- Inspect wiring
VVT
- Check oil
- Check oil pressure when required
- Check adjustment valve
- Check camshaft adjuster
- Compare specified/actual position
- Perform applicable Basic Setting/Output Test
Mechanical
- Verify TDC
- Verify crankshaft timing
- Verify camshaft timing
- Check timing chain/belt
- Check tensioner
- Check guides
- Verify adjuster installation
Final Verification
- Clear DTC
- Perform required adaptation
- Start engine
- Monitor camshaft values
- Test drive
- Perform final Auto-Scan
Frequently Asked Questions
Can P0017 be caused by a bad camshaft sensor?
Yes.
But the sensor should not be assumed to be the cause.
Mechanical timing, VVT operation, oil supply, wiring, and sensor signals should all be considered.
Is P0017 the same as P0016?
No.
P0016 refers to Bank 1 Sensor A, while P0017 refers to Bank 1 Sensor B.
On many four-cylinder engines, A is associated with the intake camshaft and B with the exhaust camshaft.
Always verify the designation for the specific engine.
Can low oil cause P0017?
It can contribute to VVT-related problems when camshaft adjustment depends on oil pressure and flow.
Check oil level, condition, specification, and pressure when appropriate.
Can a stretched timing chain cause P0017?
Yes.
Timing-chain wear can change the crankshaft-to-camshaft relationship.
But P0017 alone does not prove chain stretch.
How is timing-chain stretch diagnosed?
On applicable engines, technicians can evaluate camshaft adaptation or phase-position values.
The result must be compared with the factory specification for the exact engine and ECU.
Mechanical inspection may also be necessary.
What is the P0017 timing tolerance?
There is no universal VW/Audi P0017 tolerance.
Different engines and ECUs can use different thresholds.
Always use the specification applicable to the exact engine and ECU.
What are MVB 091 and 093?
On applicable older VAG ECUs:
- MVB 091 provides camshaft-adjustment information.
- MVB 093 provides camshaft adaptation/phase-position information.
Ross-Tech documents these groups as part of the older camshaft measuring-block system.
They are not universal P0017 measuring blocks.
What are IDE00189 and IDE00190?
IDE identifiers are UDS/ECU-specific data objects.
Rather than assuming that a particular IDE number applies to every VW/Audi, identify the relevant camshaft parameters available in the actual ECU through VCDS Advanced Measuring Values.
This avoids applying an incorrect parameter from another ECU.
Does P0017 always mean the exhaust camshaft?
No.
On many four-cylinder VW/Audi engines, Sensor B corresponds to the exhaust camshaft.
However, Bank/Sensor designations vary by engine architecture.
Always verify the exact engine.
Should I replace the timing chain if I get P0017?
No—not automatically.
First determine whether the evidence supports a mechanical timing problem.
Evaluate:
- Camshaft adaptation
- Actual vs. specified position
- VVT response
- Related DTCs
- Symptoms
- Mechanical timing
Can VCDS diagnose P0017?
VCDS can provide valuable diagnostic information including:
- Fault codes
- Freeze-frame information
- Measuring Values
- Advanced Measuring Values
- Adaptation data
- Basic Settings
- Output Tests where supported
However, VCDS cannot replace mechanical inspection when the evidence points toward a timing problem.
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