P0008: Engine Position System Performance (Bank 1)
The engine computer sees a timing error between the crank and camshafts. On some engines (notably GM 3.6L V6) this is a classic sign of a stretched timing chain.
Green, yellow, red: three ways P0008 can look
The same code can be a quick fix or a reason to pull over. Match your situation to the closest example.
Keep an eye on it
Set once, no noise.
Schedule a repair
Rattle on startup. Plan the timing chain repair before it gets worse.
Stop and get help
Loud rattle, misfire or no-start. Don't drive.
Symptoms you might notice
- Rough idle
- Hesitation
- Rattle on startup
Common causes, cheapest first
- Stretched timing chain (most common)
- Worn guides or tensioner
- Oil problem
What you can check before calling
- Check oil level
- Listen for startup rattle
A code points to a system, not a part. Replacing parts based on the code alone is how people spend money without fixing the problem. Testing confirms the cause first.
Generic codes (second character 0) mean the same thing on every vehicle. Some manufacturers add their own details, so check service information for your exact vehicle.
More cam & crank timing codes
- P0011
Camshaft Position A Timing Over-Advanced or System Performance (Bank 1) - P0012
Camshaft Position A Timing Over-Retarded (Bank 1) - P0014
Camshaft Position B Timing Over-Advanced or System Performance (Bank 1) - P0017
Crankshaft Position / Camshaft Position Correlation (Bank 1 Sensor B) - P0010
Intake Camshaft Position Actuator Circuit (Bank 1) - P0335
Crankshaft Position Sensor A Circuit Malfunction
Look up another code
Cummins fault code (like 1922), J1939 SPN and FMI (like SPN 3251 FMI 0), or an OBD-II code (like P0420).
Questions
What does P0008 mean?
P0008 means "Engine Position System Performance (Bank 1)". The engine computer sees a timing error between the crank and camshafts. On some engines (notably GM 3.6L V6) this is a classic sign of a stretched timing chain.
Can I drive with code P0008?
It depends on what the vehicle is doing. Green: Set once, no noise. Yellow: Rattle on startup. Plan the timing chain repair before it gets worse. Red: Loud rattle, misfire or no-start. Don't drive.
What causes P0008?
The most common causes are: stretched timing chain (most common); worn guides or tensioner; oil problem.
Is P0008 a serious code?
It can be. Loud rattle, misfire or no-start. Don't drive.
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