P20BD
Reductant Heater B Control Circuit/Open
P20BD is an OBD-II diagnostic trouble code meaning: Reductant Heater B Control Circuit/Open. Common causes: open or short circuit in the heater circuit, reagent heating element malfunction. Estimated repair cost: $28–133.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Deterioration of environmental indicators
- Possible messages indicating a malfunction of the SCR system
- Problems starting in cold weather (if the reagent is frozen)
Causes
- Open or short circuit in the heater circuit
- Reagent heating element malfunction
- Problems with the relay or circuit fuse
- SCR control module malfunction
- Oxidation or corrosion of connector contacts
How to Fix
- Check the integrity of the heater circuit wires
- Check the resistance of the heating element
- Inspect the system fuses and relays
- Diagnose the SCR control module
- Clean circuit connector contacts
Related codes
Error P20BD by Vehicle Brand
FAQ
What does the P20BD code mean?
P20BD is an OBD-II diagnostic trouble code that indicates: Reductant Heater B Control Circuit/Open
What causes a P20BD error code?
The most common causes of P20BD include: Open or short circuit in the heater circuit; Reagent heating element malfunction; Problems with the relay or circuit fuse; SCR control module malfunction.
How do I fix a P20BD diagnostic trouble code?
To fix P20BD: Check the integrity of the heater circuit wires. Check the resistance of the heating element. Inspect the system fuses and relays. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20BD?
Yes, but get it checked soon
How much does it cost to fix P20BD?
The estimated repair cost for P20BD is $28–133. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat