Powertrain, generic (extended)

P2625 Injector Control Pressure Regulator Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

With P2625 the module sees the injection pressure regulator circuit at too high a level: the switched line is shorted to battery voltage, or the IPR coil draws more current than the driver allows. No manufacturer documents this code publicly; Ford's 6.0 L Power Stroke summaries from 2003 to 2009 fold every IPR driver fault into P2623, and International's HEUI truck engines report through their own codes. The regulator matters because it alone decides how much oil pressure reaches the injectors; Navistar's HEUI design lets that pressure be set independently of engine speed. If the PCM cannot pull the IPR coil, rail pressure stays near minimum, so the engine may not start at all. CARB treats such hydraulic pressure control as part of fuel system monitoring.

Likely causes

IPR control line shorted to a battery-voltage circuit
IPR coil with reduced resistance causing overcurrent
Faulty IPR driver in the PCM

Symptoms

  • Long cranking or no-start
  • Low power, engine may stall
  • Malfunction indicator lamp on

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–900
Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

icp regulatorwiring harness

Related codes

P2623P2624P2284P2290

References: law.cornell.edu, fordservicecontent.com, en.wikipedia.org.