P202B
Reductant Tank Heater Control Circuit Low
P202B is an OBD-II diagnostic trouble code meaning: Reductant Tank Heater Control Circuit Low. Common causes: open or short circuit in the heater circuit, reagent tank heating element malfunction. Estimated repair cost: $28–89.
Symptoms
- Check Engine light comes on
- Reduced efficiency of the SCR system
- Possible errors related to the emission system
- Deterioration of environmental indicators
Causes
- Open or short circuit in the heater circuit
- Reagent tank 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 fuses and relays
- Test the resistance of the heating element
- Inspect connectors for corrosion
- If necessary, replace the reagent tank heater
Related codes
Error P202B by Vehicle Brand
FAQ
What does the P202B code mean?
P202B is an OBD-II diagnostic trouble code that indicates: Reductant Tank Heater Control Circuit Low
What causes a P202B error code?
The most common causes of P202B include: Open or short circuit in the heater circuit; Reagent tank heating element malfunction; Problems with the relay or circuit fuse; SCR control module malfunction.
How do I fix a P202B diagnostic trouble code?
To fix P202B: Check the integrity of the heater circuit. Check fuses and relays. Test the resistance of the heating element. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P202B?
Yes, but get it checked soon
How much does it cost to fix P202B?
The estimated repair cost for P202B is $28–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat