NOTE:
Before you troubleshoot, record all freeze data and
any on-board snapshot, and review the general
troubleshooting information.
If DTC P1128, P1129, P2228, and/or P2229 are stored
at the sa
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information.
1. Check for poor connections or loose terminals at
ECT sensor 1/2
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information.
1. Turn the ignition switch ON (II).
2. Check ECT SENSOR 1 in the
Component Location Index
EXHAUST GAS RECIRCULATION (EGR) VALVE
POWERTRAIN CONTROL MODULE (PCM)
EXHAUST GAS RECIRCULATION (EGR) PLATE
DTC Troubleshooting
DTC P0401: EGR Insufficient Flow
NOTE: Before you troubleshoot, record all freeze data and any on-board
snapshot, and review the genera
1. Warm up the engine to normal operating temperature (the radiator fan comes
on).
2. Apply the parking brake, and block both rear
wheels. Start the engine, then shift to the D position
while pressing the brake pedal. Press the
accelerator pedal, and release it suddenly. The
engine should not stal