Powertrain, generic (extended)

P2285 Injector Control Pressure Sensor Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2285 is set when the ICP sensor voltage falls almost to zero. Ford's 6.0L Power Stroke summaries for 2003 and 2004 define it precisely: below 0.03 V, checked every 8 ms without entry conditions, decided in under one second. Such a value cannot come from a working sensor on a 5-volt reference, so it points to an open signal wire, a short to ground, a lost reference voltage or an unplugged sensor. Ford lights the MIL for P2285 even on heavy federal trucks over 8,500 lb that otherwise run a reduced OBD calibration. On a HEUI engine the PCM then has to estimate rail pressure, so starting and response deteriorate. P2286 is the high-voltage counterpart; P2284 covers a valid signal that disagrees with the commanded pressure.

Likely causes

Signal wire open or shorted to ground
Sensor disconnected or failed internally
Missing 5-volt reference supply

Symptoms

  • MIL on immediately
  • Hard starting and reduced power

Repair estimate

DifficultyMediumDIY possible
Parts and labour€40–400
Time0.5–2 h

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

Parts involved

icp sensoricp wiring

Related codes

P2286P2284P2283P2287

References: fordservicecontent.com, fordservicecontent.com, performanceparts.ford.com, law.cornell.edu.