P0008: Engine Position System Performance — Bank 1
Do not keep driving
Stop driving and have the timing checked. A chain that has already stretched enough to set this code can jump further, and on an interference engine that means bent valves.
What this code means
The module compares where the crankshaft says the engine is against where the camshaft says it is, and on bank 1 the two no longer agree within tolerance. Unlike the correlation codes further down this range, this one tends to be raised when the discrepancy looks like genuine mechanical drift rather than a sensor glitch — a stretched timing chain, a worn tensioner, or a chain that has jumped a tooth. Treat it as a mechanical timing code until proven otherwise.
Likely causes
Start here
- Stretched timing chain · specialist
- Worn timing chain tensioner or guide · specialist
- Timing chain or belt out of alignment · specialist
Less common
- Low or dirty engine oil · easy
- Faulty camshaft position sensor · moderate
- Faulty crankshaft position sensor · moderate
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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