Particulate Filter Pressure Sensor D Circuit Low

Where it lives

For P2CEC, the sensor sits on the circuit this code reports. The description of P2CEC reports a fault at the sensor.

Check these first

• A failing particulate filter pressure sensor D giving a low signal
• A clogged or blocked pressure port or hose at sensor D
• Corrosion or damage in the sensor D wiring or connector
• A short to ground on the sensor D signal circuit
• Loss of reference voltage or ground at sensor D

What to do next

1. Check reference voltage and ground at particulate filter pressure sensor D
2. Inspect the sensor D pressure port and hoses for soot or blockage
3. Test the sensor D signal circuit for a short to ground
4. Read particulate filter pressure data with a scan tool and compare it to sensor A
5. Replace particulate filter pressure sensor D if the signal stays low
6. Clear the code and retest

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