OBD-II code · Powertrain (generic, extended)
P2623 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.
Is it safe to drive with P2623?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyOpen coil in the pressure regulator
- PossibleBroken control wire
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Icp Regulator, Wiring Harness
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.