Engine Position System Performance Bank 1
The ECU detects an implausible relationship between crankshaft and camshaft signals on bank 1, indicating timing chain stretch, jumped tooth, or sensor reluctor wear.
Affected components
- Timing chain
- Crankshaft position sensor
- Camshaft position sensor
- Reluctor ring
Common causes
- High likelihood: Timing chain stretched, guides worn
- Medium likelihood: Chain jumped one tooth
- Low likelihood: Crankshaft or camshaft sensor misaligned
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
- Reduced-power or limp mode may occur
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.