Injector Control Pressure Regulator Circuit / Open
The Injector Control Pressure (ICP) regulator on hydraulically actuated injectors (HEUI diesel) or the high-pressure regulator on common-rail systems cannot be driven. Injection pressure cannot be controlled, engine may not start.
Affected components
- Icp regulator
- Wiring harness
Common causes
- High likelihood: Open coil in the pressure regulator
- Medium likelihood: Broken control wire
Diagnostic notes
- The malfunction indicator lamp may illuminate
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.