Injector Control Pressure Sensor Circuit Low
What it means
P2285 means the injection control pressure (ICP) sensor circuit is reading low voltage on a diesel that uses hydraulically-actuated injectors. Because the ECM depends on this sensor to control injection, a fault can cause hard starting, stalling, or a no-start. An oil-fouled connector or damaged wiring is a frequent cause.
Can I keep driving? May cause hard starting, stalling, or no-start on HEUI diesels — the ECM relies on this sensor to control injection, so repair promptly.
Common symptoms
What you'll notice
- Check-engine light on
- Hard starting or no-start
- Stalling, especially at idle
- Rough running and low power
- Black smoke or misfire under load
Common causes
Most likely first
- Faulty injection (injector) control pressure sensorLikely
- Wiring open or shorted to ground in the ICP circuitCommon
- Corroded or oil-contaminated ICP connectorCommon
- Leak in the high-pressure oil system feeding the injectorsLess often
- Fuel injector control module (FICM) or driver faultLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and compare commanded vs actual ICP at key-on and cranking.
- Inspect the ICP sensor connector for oil intrusion or corrosion — a very common cause.
- Check the signal, reference, and ground wires for shorts to ground or opens.
- Test the high-pressure oil system for leaks affecting injection control pressure.
- Replace the ICP sensor if the circuit checks out, then clear and re-test.
P2285 by make
Based on commonly reported failure patterns across owner and repair communities, not on our scan data.
Ford
On Ford diesel trucks with the 6.0L Power Stroke (and the older 7.3L), a failing injection control pressure sensor, or oil leaks in the injector oil system, are commonly reported causes. Connector corrosion is common, so check it first.
FAQ
Quick answers
Is it safe to drive with P2285?+
Can I just clear P2285?+
Related codes
Read & clear P2285 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.