P0490 - OBD II Trouble Code

Our automotive experts have put together the following information about the P0490 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 P0490 code.

OBD II Fault Code

• OBD II P0490

OBD-II Code Powertrain Control Module (PCM) failure is defined as a Exhaust Gas Recirculation "A" Control Circuit High

EGR (Exhaust Gas Recirculation) systems are used to reduce the combustion temperature, thus reducing emissions. If the engine control module (PCM) does not detect the amount of flow requested from the EGR, it will set code P0490.

Common Problems That Trigger the P0490 Code

• EGR valve failure
• Powertrain Control Module (PCM) failure
• Wiring issue

Common Repairs Needed for the P0490 Code

• EGR Valve Replacement