P20AC
Reductant Metering Unit Temperature Sensor Circuit
P20AC is an OBD-II diagnostic trouble code meaning: Reductant Metering Unit Temperature Sensor Circuit. Common causes: reductant temperature sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $28–89.
Symptoms
- Check Engine Light Is On
- Reduced engine power
- Increased fuel consumption
- Possible problems starting the engine
- The SCR system may turn off
Causes
- Reductant temperature sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Wiring harness damage
- Problems with the SCR control unit
How to Fix
- Check the continuity of the temperature sensor circuit
- Inspect connectors and contacts for corrosion or damage
- Check the resistance of the temperature sensor
- If necessary, replace the reductant temperature sensor
- Reset the fault code and check the system
Related codes
Error P20AC by Vehicle Brand
FAQ
What does the P20AC code mean?
P20AC is an OBD-II diagnostic trouble code that indicates: Reductant Metering Unit Temperature Sensor Circuit
What causes a P20AC error code?
The most common causes of P20AC include: Reductant temperature sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Wiring harness damage.
How do I fix a P20AC diagnostic trouble code?
To fix P20AC: Check the continuity of the temperature sensor circuit. Inspect connectors and contacts for corrosion or damage. Check the resistance of the temperature sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20AC?
Yes, but get it checked soon
How much does it cost to fix P20AC?
The estimated repair cost for P20AC is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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