Powertrain, generic (extended)

P2289 Injector Control Pressure Too High - Engine Off

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

ICP sensor with a positive offset or oil contamination
Partial short between signal and reference voltage
Faulty input stage in the PCM

Symptoms

  • MIL on, possibly after the engine was switched off
  • Hard starting if the PCM trusts the false pressure value

Repair estimate

DifficultyMediumDIY possible
Parts and labour€60–400
Time0.5–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

injector control pressure sensorinjection pressure regulator

Related codes

P2288P2286P2284P2291

References: fordservicecontent.com, fordservicecontent.com, performanceparts.ford.com, en.wikipedia.org.