DTC P049D

DTC P049D  : EGR Control Position Exceeded Learning Limit

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode.

   -4. Turn the vehicle to the ON mode, and wait for 10 seconds.

   -5. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P049D EGR Control Position Exceeded Learning Limit

   DTC (PGM-FI)

   Is DTC P049D indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the EGR valve and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

2. EGR valve operation check

   -1. Clear the DTC with the HDS.

   -2. Turn the vehicle to the OFF (LOCK) mode.

   -3. Remove the EGR valve .

   -4. Reconnect the EGR valve 5P connector.

   -5. Turn the vehicle to the ON mode.

   -6. Visually check the EGR valve operation.

   Does the EGR valve move to its fully closed position?

   YES 

   Go to step 3.

   NO 

   Go to step 4.

3. EGR valve condition check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connector.

   EGR valve 5P connector

   -3. Check for sludge or carbon on the EGR valve.

   Is there sludge or carbon on the EGR valve?

   YES 

   Clean the EGR valve and recheck. If DTC P049D is indicated again, replace the EGR valve .

   NO 

   Replace the EGR valve .

4. Open wire check (PG2 line)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connector.

   EGR valve 5P connector

   -3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	EGR valve 5P connector: disconnected
   Test point 1	EGR valve 5P connector (female terminals) No. 1:
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The PG2 wire is OK. Go to step 5.

   NO 

   Repair an open in the PG2 wire between the EGR valve and G102.

5. Open wire check (EEGR line)

   -1. Jump the SCS line with the HDS, and wait more than 1 minute.

   -2. Disconnect the following connector.

   PCM connector E (80P)

   -3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	EGR valve 5P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	EGR valve 5P connector (female terminals) No. 5:
   Test point 2	PCM connector E (80P) No. 10

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The EEGR wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM , then recheck. If DTC P049D goes away and the PCM was substituted, replace the original PCM .

   NO 

   Repair an open in the EEGR wire between the PCM (E10) and the EGR valve.