P2289 code meaning
Injector Control Pressure Too High - Engine Off
Powertrain system Generic code P22xx codes Check engine light
What P2289 means
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.
P2289 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2289
- MIL on, possibly after the engine was switched off
- Hard starting if the PCM trusts the false pressure value
Common causes of P2289
- Most likelyICP sensor with a positive offset or oil contamination
- PossiblePartial short between signal and reference voltage
- Less likelyFaulty input 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
Injector control pressure sensorInjection pressure regulator
What each part of P2289 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 2 | Area: fuel and air metering (injector circuit). |
| 89 | The exact fault in that area. |
What to do next
- Note P2289 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 P2289
What does P2289 mean?
P2289 means "Injector Control Pressure Too High - Engine Off". P2289 is a plausibility test carried out with the engine stopped. It is a generic code, so it means the same on every make.
Is it safe to drive with P2289?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2289 fail an emissions test?
Yes, it can. P2289 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 P2289 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2289 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.