P20C5
Reductant Heater D Control Circuit/Open
P20C5 is an OBD-II diagnostic trouble code meaning: Reductant Heater D Control Circuit/Open. Common causes: open or short circuit in the heater circuit, reagent heating element malfunction. Estimated repair cost: $28–167.
Symptoms
- Check Engine Light Is On
- Reduced engine power
- Possible transition to emergency mode
- Increased fuel consumption
- SCR error message on dashboard
Causes
- Open or short circuit in the heater circuit
- Reagent heating element malfunction
- Relay or fuse problems
- SCR control module malfunction
- Poor contact in connectors
How to Fix
- Check heater circuit fuses and relays
- Inspect the wiring harness for damage
- Check the resistance of the heating element
- Diagnose the SCR control module
- Check connections and connectors in the circuit
Related codes
Error P20C5 by Vehicle Brand
FAQ
What does the P20C5 code mean?
P20C5 is an OBD-II diagnostic trouble code that indicates: Reductant Heater D Control Circuit/Open
What causes a P20C5 error code?
The most common causes of P20C5 include: Open or short circuit in the heater circuit; Reagent heating element malfunction; Relay or fuse problems; SCR control module malfunction.
How do I fix a P20C5 diagnostic trouble code?
To fix P20C5: Check heater circuit fuses and relays. Inspect the wiring harness for damage. Check the resistance of the heating element. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20C5?
Yes, but get it checked soon
How much does it cost to fix P20C5?
The estimated repair cost for P20C5 is $28–167. Actual cost depends on your vehicle, location, and labor rates.
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