DTC P0451

DTC P0451  : FTP Sensor Circuit Range/Performance Problem

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) .
• If DTC P2422 is stored at the same time as DTC P0451, troubleshoot DTC P2422 first, then recheck for DTC P0451.

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   - 2. Clear the DTC with the HDS.

   - 3. Start the engine, and let it idle for 1 minute.

   - 4. Monitor the OBD STATUS for DTC P0451 in the DTCs MENU with the HDS.

   DTC Description	OBD STATUS
   P0451 FTP Sensor Circuit Range/Performance Problem

   Does the HDS indicate FAILED?

   YES 

   Replace the FTP sensor .

   NO 

   If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the FTP sensor and the PCM. If the HDS indicates NOT COMPLETED, keep idling until a result comes on.