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  • Diagnostic trouble code (DTC) P2285 is set when the powertrain control module (PCM) detects a low voltage or resistance from the injector control pressure (ICP) sensor circuit.
  • Low engine oil levels, a failed ICP sensor, and a malfunctioning oil pump can trigger this code.
  • If this code is present, your vehicle might not start. If it does, there might be noticeable performance problems like rough running and hard starting.

On-board diagnostic (OBD) codes are designed to help you identify possible issues with your vehicle. But before attempting any fixes to resolve the codes retrieved by your scan tool, it’s important to know exactly what they mean.

Code P2285 is one of many trouble codes that can be logged and retrieved from the OBD system. Read on to understand what this code can mean for your vehicle.

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What Does the P2285 Code Mean?

automotive ecm focused view
P2285 is logged when the powertrain control module (PCM) detects voltage or resistance that is lower than the appropriate range within the injector control pressure (ICP) sensor circuit.

Diagnostic trouble code (DTC) P2285 stands for “Injector Control Pressure Sensor Circuit Low.” This code can be logged when the powertrain control module (PCM) detects voltage or resistance that is lower than the appropriate range within the injector control pressure (ICP) sensor circuit.

On diesel vehicles with a hydraulic electronic unit injector (HEUI) fuel system, the injector pressure regulator (IPR) regulates the oil pressure going to the injectors. The ICP sensor then monitors the oil pressure produced by the high-pressure oil pump.

The ICP sensor circuit sends a feedback signal to indicate fuel rail pressure. The PCM uses this data to correct the injector timing and the injection control pressure for proper fuel delivery.

When the PCM detects voltage or resistance that is lower than the determined range within the ICP sensor circuit, code P2285 will be set and the check engine light will illuminate.

Depending on the severity of the problem, related error codes can also be stored with this DTC. Code P2285 is similar to error codes P2283, P2284, P2286, and P2287.

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Note: The definition of code P2285 may be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P2285 Code?

  • Extremely low engine oil levels
  • ICP sensor failure
  • IPR failure
  • Oil pump malfunction
  • Wiring problems
  • Damaged connector
  • Defective PCM

What are the Common Symptoms of the P2285 Code?

How to Diagnose the P2285 Code

The P2285 trouble code is a generic code that can be set across several makes and models. However, this does not mean there’s a one-size-fits-all approach to diagnosing its underlying cause. The steps for troubleshooting this code will vary depending on your vehicle’s make and model.

Check out this video to get an idea of what the diagnostic process for this code might involve:

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How to Fix the P2285 Code

P2285 can share similar triggers and symptoms with other fault codes. However, that does not mean that they share repair steps as well. All vehicles are different, so make sure to refer to a factory repair guide that is specific to your car.

If you’re considering troubleshooting this code on your own, make sure to consult a vehicle repair manual or an online repair database to learn the appropriate diagnostic and repair procedures for this code. Alternatively, you can leave the job to a professional.

About The Author
Written By Automotive and Tech Writers

The Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

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