P20BF

DTC P20BF, sometimes indicated as P20BF00 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing reductant heater "b" control circuit low.

The Reductant Heater "B" Control Circuit Low DTC means that the reductant heater "B" control circuit is low. This can happen for a few different reasons, but the most common one is a bad reductant heater "B" control circuit.
If this DTC is causing your vehicle to not run properly, you will need to replace the reductant heater "B" control circuit.

• P20BF: Reductant Heater B Control Circuit Low
• P20BF: Reductant Heater "B" Control Circuit Low
• P20BF: Reductant heater control B – circuit low
• P20BF 00: Reductant heater control B - circuit low