P209C

DTC P209C, sometimes indicated as P209C00 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 injection air pressure sensor "b" circuit low.

The Reductant Injection Air Pressure Sensor "B" Circuit Low code means that the reductant injection air pressure sensor is reporting a low pressure condition. This can be caused by a number of things, such as a blocked air filter, a defective air pressure sensor, or a leak in the air system.
To fix this code, you need to troubleshoot the problem that is causing the low pressure condition. This may require inspecting the air filter, replacing the air pressure sensor, or repairing any leaks in the air system.

• P209C: Reductant Injection Air Pressure Sensor B Circuit Low
• P209C: Reductant Injection Air Pressure Sensor "B" Circuit Low
• P209C: Reductant injection air pressure sensor B – circuit low
• P209C 00: Reductant injection air pressure sensor B - circuit low