P20C0
Reductant Heater B Control Circuit High
P20C0 is an OBD-II diagnostic trouble code meaning: Reductant Heater B Control Circuit High. Common causes: short circuit in the heater circuit, reagent heating element malfunction. Estimated repair cost: $28–89.
Symptoms
- Check Engine light comes on
- Reduced efficiency of the SCR system
- Possible increase in fuel consumption
- Exhaust gas treatment system error message
- Engine power limitation (on some models)
Causes
- Short circuit in the heater circuit
- Reagent heating element malfunction
- Wiring harness damage
- Problems with the SCR control module
- Corrosion of contacts or connectors
How to Fix
- Check the integrity of the heater wiring harness
- Test the resistance of the heating element
- Check voltage and continuity of control circuit
- Inspect connectors for corrosion or damage
- If necessary, replace the heating element or wiring harness
Related codes
Error P20C0 by Vehicle Brand
FAQ
What does the P20C0 code mean?
P20C0 is an OBD-II diagnostic trouble code that indicates: Reductant Heater B Control Circuit High
What causes a P20C0 error code?
The most common causes of P20C0 include: Short circuit in the heater circuit; Reagent heating element malfunction; Wiring harness damage; Problems with the SCR control module.
How do I fix a P20C0 diagnostic trouble code?
To fix P20C0: Check the integrity of the heater wiring harness. Test the resistance of the heating element. Check voltage and continuity of control circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20C0?
Yes, but get it checked soon
How much does it cost to fix P20C0?
The estimated repair cost for P20C0 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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