Thread: Please help with gwm error codes P0404 and P2264

P0404 Code: Symptoms, Causes, and Solutions p0404 P0404 EGR Valve malfunction #P0404 #EGR_Valve #Fix p0404 Code P0404 is triggered when the EGR position is not as the ECM expected and the most common cause is the EGR valve partly stuck open from carbon buildup on the

p0404 DTC Troubleshooting: P0404 · DTC P0404 :, EGR Valve Insufficient Lift · 1 Reset the ECMPCM · 2 Start the engine · 3 Drive the vehicle under