P20C2
Reductant Heater C Control Circuit Performance
P20C2 is an OBD-II diagnostic trouble code meaning: Reductant Heater C Control Circuit Performance. Common causes: open or short circuit in the heater circuit, heater relay malfunction. Estimated repair cost: $28–111.
Symptoms
- Check Engine light comes on
- Possible reduction in engine power
- The SCR system may stop working
- Possible problems starting in cold weather
- Increased NOx emissions
Causes
- Open or short circuit in the heater circuit
- Heater relay malfunction
- Problems with the SCR control unit
- Heating element failure
- Poor contact in connectors
How to Fix
- Check heater circuit fuses
- Diagnose the resistance of the heating element
- Check the integrity of wiring and contacts
- Test the operation of the heater relay
- If necessary, replace the heating element
Related codes
Error P20C2 by Vehicle Brand
FAQ
What does the P20C2 code mean?
P20C2 is an OBD-II diagnostic trouble code that indicates: Reductant Heater C Control Circuit Performance
What causes a P20C2 error code?
The most common causes of P20C2 include: Open or short circuit in the heater circuit; Heater relay malfunction; Problems with the SCR control unit; Heating element failure.
How do I fix a P20C2 diagnostic trouble code?
To fix P20C2: Check heater circuit fuses. Diagnose the resistance of the heating element. Check the integrity of wiring and contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20C2?
Yes, but get it checked soon
How much does it cost to fix P20C2?
The estimated repair cost for P20C2 is $28–111. Actual cost depends on your vehicle, location, and labor rates.
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