P20C2

DTC P20C2, sometimes indicated as P20C200 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 "c" control circuit performance.

This code means that the reductant heater "C" control circuit is not working properly. This could be caused by a number of things, including a bad sensor, a bad connection, or a problem with the heater itself.
The best way to fix this problem is to diagnose and fix the underlying cause. However, if you are unable to do so, you may be able to temporarily fix it by clearing the code and then resetting the system.

• P20C2: Reductant Heater C Control Circuit Performance
• P20C2: Reductant Heater "C" Control Circuit Performance
• P20C2: Reductant heater control C – performance problem
• P20C2 00: Reductant heater control C - performance problem