Injector Control Pressure Too Low
ICP is below the lower threshold — typically IPR stuck open, leaking high-pressure oil rail, or weak HP oil pump.
Affected components
- Injection pressure regulator
- High pressure oil pump
Common causes
- High likelihood: IPR stuck open
- Medium likelihood: HP oil pump weak
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- Reduced-power or limp mode may occur
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.