P2289Injector Control Pressure Too High - Engine Off
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2289 is a plausibility test carried out with the engine stopped. On a HEUI diesel the high-pressure oil pump is driven by the engine, so once it stops, injector control pressure should drop to almost nothing. Ford's 6.0L Power Stroke summaries check this in engine-off mode: if the ICP reading stays above 10 MPa for more than 10 s (2003) or 12 s (2004), P2289 is stored. A real pressure that high without a running pump is unlikely, so the code mainly points to an ICP sensor with an offset or contamination, or to a signal circuit pulled up by a fault that stays within the electrical limits of P2286. Ford's 2014 PCM table marks it as a MIL code. P2288 is the counterpart with the engine running.
- What you may notice
- MIL on, possibly after the engine was switched off
- Hard starting if the PCM trusts the false pressure value
- Likely causes
- LikelyICP sensor with a positive offset or oil contamination
- PossiblePartial short between signal and reference voltage
- RareFaulty input stage in the PCM
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.