DTC P0400
DTC P0400 : EGR System Leak Detected
NOTE:
Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the A/T System (2014 2015),
or How to Troubleshoot the Fuel and Emissions Systems,
or How to Troubleshoot the Brake Booster Pressure Monitoring System (2016 2017 2018 2019 2020),
or How to Troubleshoot the Fuel and Emissions Systems(With Auto Idle Stop System) (2016)
.
| DTC Description | Confirmed DTC | Pending DTC | Freeze Frame |
|---|---|---|---|
| P0400 EGR System Leak Detected |
DTC (PGM-FI)
- EGR pipe visual check
-1. Check for a loose or damaged EGR pipe.
Is the EGR pipe OK?
YES
Go to step 2.
NO
- Problem verification
-1. Start the engine. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
- 2. Test-drive under these conditions:
- Engine coolant temperature (ECT SENSOR 1) above 158 °F (70 °C)
- Transmission in D
- Drive the vehicle at 25 mph (40 km/h) for 5 minutes or more
- Maintain then vehicle speed at 26 mph (41 km/h) and the engine speed between 1, 500-3, 000 rpm for 10 seconds or more with cruise control set
Signal Current conditions Values Unit ECT SENSOR 1 VEHICLE SPEED ENGINE SPEED - 3. Monitor the OBD STATUS for DTC P0400 in the DTCs MENU with the HDS.
DTC Description OBD STATUS P0400 EGR System Leak Detected Does the HDS indicate FAILED?
YES
NO
If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for leakage between the EGR pipe and the EGR valve. If the HDS indicates NOT COMPLETED, go to step 2-2 and recheck.