Cylinder Deactivation Oil Pressure Switch Bank 1 Performance
The engine control module has detected a rationality fault between commanded oil pressure and the bank 1 cylinder deactivation oil pressure switch state. The switch fails to change state at the expected pressure threshold during deactivation transitions.
Affected components
- Oil pressure switch
- Oil control valve
Common causes
- High likelihood: Pressure switch sticky or contaminated
- Medium likelihood: Oil control valve slow to respond
- Low likelihood: Low system oil pressure
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
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.