P223B
Reductant Heater F Control Circuit
P223B is an OBD-II diagnostic trouble code meaning: Reductant Heater F Control Circuit. Common causes: open or short circuit in the heater circuit, heating element malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Reduced efficiency of the SCR system
- Possible increase in NOx emissions
- Exhaust gas treatment system error message
- In cold weather, problems with starting the system may occur.
Causes
- Open or short circuit in the heater circuit
- Heating element malfunction
- Problems with the relay or circuit fuse
- SCR control module malfunction
- Corrosion or poor contact in connectors
How to Fix
- Check the integrity of the heater circuit
- Check the resistance of the heating element
- Inspect the fuses and relays of the circuit
- Check connectors and wiring harness for damage
- If necessary, replace the heating element
Related codes
Error P223B by Vehicle Brand
FAQ
What does the P223B code mean?
P223B is an OBD-II diagnostic trouble code that indicates: Reductant Heater F Control Circuit
What causes a P223B error code?
The most common causes of P223B include: Open or short circuit in the heater circuit; Heating element malfunction; Problems with the relay or circuit fuse; SCR control module malfunction.
How do I fix a P223B diagnostic trouble code?
To fix P223B: Check the integrity of the heater circuit. Check the resistance of the heating element. Inspect the fuses and relays of the circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P223B?
Yes, but get it checked soon
How much does it cost to fix P223B?
The estimated repair cost for P223B is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat