Powertrain, generic (extended)

P2284 Injector Control Pressure Sensor Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P2284 means the measured injector control pressure does not follow what the PCM commands. Ford's 6.0L Power Stroke summaries (2003 and 2004) run the check continuously every 8 ms with the engine running: a fault is recorded once measured pressure stays more than 3.0 MPa above the target for longer than 7 s, the reverse case being P2290. Because the high-pressure oil pump is regulated through the IPR valve against the sensor reading, a biased sensor, a sticking regulator or an air-entrained oil supply can all open this gap. Ford also ran a 2003 owner programme replacing ICP sensors whose O-ring could shift and cause reduced power and rough idle. Unlike P2285/P2286 the circuit voltage is valid here; only its relation to the command is wrong.

Likely causes

ICP sensor reading offset, including a shifted internal O-ring
Injection pressure regulator valve sticking or contaminated
Wrong, aerated or low engine oil disturbing pressure control
Oil wicking into the sensor connector

Symptoms

  • Reduced power and rough idle
  • Engine runs on a substitute pressure value
  • MIL on

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–900
Time0.5–4 h

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

Parts involved

icp sensorhigh pressure oil pumpicp wiring

Related codes

P2285P2286P2288P2290P2283

References: fordservicecontent.com, fordservicecontent.com, static.nhtsa.gov, patents.google.com.