P2290
Injector Control Pressure Too Low
Diesel fuel injection
Generic OBD-II
High
What it means
P2290 means the injection control pressure — the high-pressure engine oil that fires the injectors on hydraulically-actuated diesel systems — is below what the ECM commands. Without enough control pressure the injectors can't deliver fuel properly, so the engine may crank but not start, start hard, misfire, or stall. Begin with engine oil level and condition, then the pressure-control valve and sensor.
High
Can I keep driving? Maybe not — low injection control pressure can cause hard starting, no-start, stalling, or heavy misfire on these diesels; address it before driving far.
Common symptoms
What you'll notice
- Hard starting or no-start
- Rough running, misfire, or stalling
- Noticeable lack of power
- Check-engine light on
Common causes
Most likely first
- Low or aerated engine oil (these injectors are hydraulically actuated by engine oil)Likely
- Faulty injection pressure regulator (IPR) valveCommon
- Leak in the high-pressure oil system (o-rings, fittings, or hoses)Common
- Faulty injection control pressure (ICP) sensorLess often
- Faulty injector driver module (FICM) or its wiringLess often
How to diagnose & fix
Work through it in order
- Check engine oil level and condition first — low or foamy oil starves the system.
- Scan and compare actual vs. desired injection control pressure while cranking/running.
- Inspect the high-pressure oil system for leaks (o-rings, standpipes, fittings).
- Test the IPR valve and the ICP sensor against spec.
- Check the injector driver module supply, ground, and wiring, then repair the confirmed fault.
FAQ
Quick answers
Is it safe to drive with P2290?+
Not reliably. Low injection control pressure can cause hard starting, stalling, or a sudden loss of power, which can leave you stranded. Diagnose it before relying on the vehicle.
Can I just clear P2290?+
It returns as soon as pressure drops again. Start with the simplest cause — oil level and condition — then work through the pressure-control components.
Related codes
Often seen with P2290
Read & clear P2290 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX