Particulate Matter Sensor Temperature Circuit Range/performance

Where it lives

For P24C7, start at the sensor the description names.

Check these first

• Failed PM sensor temperature element reading out of range
• Restricted flow or soot buildup around the PM sensor
• Damage or corrosion in the PM sensor temperature circuit
• Leaking exhaust near the PM sensor

What to do next

1. Read PM sensor temperature live data and compare to expected
2. Inspect the PM sensor tip for soot or damage
3. Check the PM sensor circuit wiring for opens and shorts
4. Look for exhaust leaks near the PM sensor
5. Replace the PM sensor if temperature stays out of range
6. Clear the code and retest

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