P2290
Injector Control Pressure Too Low
ICP is below the lower threshold — typically IPR stuck open, leaking high-pressure oil rail, or weak HP oil pump.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- IPR stuck openCommon
- HP oil pump weakPossible
Parts involved
- Injection Pressure Regulator
- High Pressure Oil Pump
P2290 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.