P20AC Possible Causes
- Faulty reductant metering unit temperature sensor
- Reductant metering unit temperature sensor harness is open or shorted
- Poor electrical connection in reductant metering unit temperature sensor circuit
What Does It Mean?
How to Fix Code P20AC
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.
P20AC Possible Symptoms
Check engine light illuminated (or service engine soon warning light)
P20AC Meaning
Reductant metering unit temperature sensor circuit is the generic description for code P20AC, but the manufacturer may have a different description