DTC P0451: Fuel Tank Pressure Sensor Circuit, Range/Performance Problem
CAUTION:
When substituting or replacement of PCM is recommended, see PCM REMOVAL & REPLACEMENT
for important precautions.
NOTE:
If DTC P2422 is stored at the same time as DTC P0451, troubleshoot DTC P2422 first, then recheck for DTC P0451.
- Turn ignition on. Using Honda PGM Tester or the HDS, do the DTC CLEAR in the CLEAR menu.
- Start engine and let idle for 1 minute.
- Using the Honda PGM Tester or the HDS, monitor OBD STATUS for DTC P0451 in the DTCs menu. If it is PASSED, problem is intermittent system is OK at this time. If it FAILED, go to next step. and recheck. If it is NOT COMPLETED, go to step 2 and recheck.
- Turn ignition off.
- Replace FTP sensor.
- Do the PCM idle learn procedure. See PCM IDLE LEARN PROCEDURE . Go to next step.
- Start engine, let idle for 1 minute. Using Honda PGM Tester or the HDS, check for Temporary DTCs or DTCs in the DTC menu. If DTC P0451 is set, check for poor connections or loose terminals at FTP sensor and PCM connectors. Go to step 1 . If any other Temporary DTCs or DTCs are set, troubleshoot those indicated. If Temporary DTCs or DTCs are not set, go to next step.
- Using the Honda PGM Tester or the HDS, monitor OBD STATUS for DTC P0451 in the DTCs menu. If it is PASSED, troubleshooting is done. If it FAILED, check for poor connections or loose terminals at FTP sensor and PCM connectors. Go to step 1 . If it is NOT COMPLETED, go to step 7 and recheck.