P2624 code meaning
Injector Control Pressure Regulator Circuit Low
Powertrain system Generic code P26xx codes Check engine light
What P2624 means
P2624 is reserved for a control circuit of the injection pressure regulator that sits too low, typically a ground short on the line switched by the PCM. No manufacturer documents this code publicly. On the 6.0 L Power Stroke, the best-known HEUI application, Ford reports every open or short of the IPR driver under P2623 alone, according to its OBD summaries up to 2009; International's HEUI engines like the DT466 use their own heavy-duty fault codes. CARB requires engines whose injection pressure is built hydraulically to have that pressure control monitored like a fuel system. A grounded IPR output can leave the valve permanently energised, so oil rail pressure may run high or the module shuts the output down. P2623 is the open circuit, P2625 the high fault.
P2624 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2624
- Hard start or no-start
- Rough running, knocking or erratic power
- Malfunction indicator lamp on
Common causes of P2624
- Most likelyIPR control wire chafed to ground near the valley or pump cover
- PossibleInternally shorted IPR coil
- Less likelyDamaged driver stage in the PCM
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Icp regulatorWiring harness
What each part of P2624 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 6 | Area: computer (engine control module) and output circuits. |
| 24 | The exact fault in that area. |
What to do next
- Note P2624 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2624
What does P2624 mean?
P2624 means "Injector Control Pressure Regulator Circuit Low". P2624 is reserved for a control circuit of the injection pressure regulator that sits too low, typically a ground short on the line switched by the PCM. It is a generic code, so it means the same on every make.
Is it safe to drive with P2624?
Drive gently and only to a workshop. With P2624 the car can go into limp mode (reduced power) to protect itself.
Will P2624 fail an emissions test?
Yes, it can. P2624 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2624 to fix?
Difficulty: hard. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P2624 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.