DTC P0400: EGR System Leak Detected

NOTE:  Before you troubleshoot, review the general troubleshooting information - Refer to: HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS or How to Troubleshoot the CVT System (CVT) .

DTC (PGM-FI)

1. EGR pipe visual check:

   - 1. Check for a loose or damaged EGR pipe.

   Is the EGR pipe OK?

   YES 

   Go to step 2.

   NO 

   Reconnect or replace the EGR pipe .

2. Problem verification:

   - 1. Start the engine.

   - 2. Hold the engine speed at 3, 000 rpm without load (CVT in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.

   - 3. Test-drive under these conditions:

   • Engine coolant temperature (ECT SENSOR 1) above 158 °F (70 °C)
   • CVT in D, M/T in 4th
   • Drive the vehicle below 25 mph (40 km/h) for 5 minutes or more
   • Maintain the vehicle speed at 26 mph (41 km/h) or more and the engine speed between 1, 500-4, 000 rpm for 10 seconds or more with cruise control set

   Signal	Current conditions
   	Values	Unit
   ECT SENSOR 1
   VEHICLE SPEED
   ENGINE SPEED

   - 4. 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 

   Replace the EGR valve .

   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 freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot. If the HDS indicates NOT COMPLETED, go to step 2-3 and recheck.