DTC P154A: Battery Sensor Internal Failure

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. Problem verification:

   - 1. Turn the vehicle to the ON mode.

   - 2. Clear the DTC with the HDS, and wait 5 seconds.

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

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   P154A Battery Sensor Internal Failure

   Is DTC P154A 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 12 volt battery sensor and the PCM. 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.

2. Determine possible failure area (12 volt battery sensor, others):

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

   - 2. Disconnect the following connector.

   12 volt battery sensor 3P connector

   - 3. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	12 volt battery sensor 3P connector: disconnected
   Test point 1	12 volt battery sensor 3P connector No. 1
   Test point 2	Body ground

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

   Is there battery voltage?

   YES 

   Replace the 12 volt battery sensor .

   NO 

   Go to step 3.

3. Fuse check:

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

   - 2. Check the following fuse.

   Fuse	No. B15 (7.5 A)
   Location	Under-hood fuse/relay box

   Is the fuse OK?

   YES 

   Repair an open in the +B BATT SNSR wire between the 12 volt battery sensor and the No. B15 (7.5 A) fuse.

   NO 

   Repair a short in the +B BATT SNSR wire between the 12 volt battery sensor and the No. B15 (7.5 A) fuse. Also replace the No. B15 (7.5 A) fuse.