P049F - OBD II Trouble Code

Our automotive experts have put together the following information about the P049F diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P049F code.

OBD II Fault Code

• OBD II P049F

OBD-II Code Powertrain Control Module (PCM) failure is defined as a Exhaust Pressure Control Valve "B"

The Exhaust Pressure Control Valve controls exhaust back pressure during engine warmup. If the engine control module (PCM) determines there is an incorrect signal from the Exhaust Pressure Control Valve, the PCM will set code P049F.

Common Problems That Trigger the P049F Code

• Exhaust pressure control valve failure
• Powertrain Control Module (PCM) failure
• Wiring issue