What Does P2285 Mean?
The ICP sensor signal voltage is below the minimum threshold expected by the PCM. This indicates either a short to ground in the circuit, a failed sensor, or actual low injector control pressure.
Safety Warning
May cause no-start, severe performance loss, or stalling. Vehicle should not be driven until diagnosed and repaired.
Common Causes
35%
ICP sensor internal short circuit or failure
30%
Wiring harness shorted to ground
20%
Actual low injector control pressure condition
10%
Corroded or damaged sensor connector causing short
5%
PCM internal fault on sensor input circuit
Diagnostic Steps
1
Step 1: Disconnect ICP sensor and check for voltage at harness connector (should be ~5V reference)
2
Step 2: Test sensor signal wire for short to ground using multimeter
3
Step 3: Measure ICP sensor resistance and compare to specifications
4
Step 4: Inspect sensor connector pins for corrosion, damage, or moisture intrusion
5
Step 5: If wiring and sensor test good, verify actual ICP pressure with mechanical gauge
Estimated Repair Cost
$150 - $2,000
Parts + labor, varies by vehicle and location
The ICP sensor signal voltage is below the minimum threshold expected by the PCM. This indicates either a short to ground in the circuit, a failed sensor, or actual low injector control pressure.
The most common cause of P2285 (Injector Control Pressure Sensor Circuit Low) is: ICP sensor internal short circuit or failure
Typical repair costs for P2285 range from $150 to $2,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May cause no-start, severe performance loss, or stalling. Vehicle should not be driven until diagnosed and repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2285 to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel Injection System
Difficulty
Type
Generic (SAE)
Recommended Tools
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