P20AF Possible Causes
- Faulty reduction unit temperature sensor
- Reduction unit temperature sensor wiring harness open or shorted
- Poor electrical connection in reduction unit temperature sensor circuit
What Does It Mean?
How to Fix Code P20AF
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
P20AF Possible Symptoms
Check Engine Light on (or Service Engine Soon warning light)
P20AF Meaning
High Reduction Unit Temperature Sensor Circuit is the generic description for code P20AF, but the manufacturer may have a different description.