Particulate Matter Sensor Received Invalid Data From ECM/PCM

Where it lives

For U05A4, the part to look at first is the sensor named here.

Check these first

• A fault inside the particulate matter sensor itself
• A loose, corroded, or water damaged connector at the particulate matter sensor
• An open or short in the particulate matter sensor wiring to the module that receives its data
• A lost power or ground feed to the particulate matter sensor
• Stale calibration or an outdated software load in the particulate matter sensor

What to do next

1. Scan all modules and record the stored and pending network codes
2. Test the particulate matter sensor power and ground feeds under load
3. Check the particulate matter sensor data bus wiring for opens, shorts, and chafing
4. Confirm the particulate matter sensor reports correct live data on the scan tool
5. Repair or replace the particulate matter sensor if the circuit, power, and bus tests pass
6. Clear the code and retest to confirm the particulate matter sensor fault is gone

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