Streamlined diagnostic procedure for vehicles with malfunction indicator lamp (mil) on and diagnostic trouble codes (dtcs) P0401, P0402, P1400 or P1401, or runs rough, lacks power, surge, poor fuel economy, and the above listed dtcs without
Related OBD-II Error Codes
Vehicles impacted by this bulletin may show the following OBD DTC.
P0402 [1] Exhaust Gas Recirculation Flow Excessive Detected
P0401 [1] Exhaust Gas Recirculation Flow Insufficient Detected