DTC P0451: EVAP Circuit, Pressure Sensor Range/Performance Problem: Condition

DTC is set when ECM (PCM) detects fuel tank pressure is less than -3.5 kPa or more than 6.6 kPa for 5 seconds. MIL is illuminated when ECM (PCM) detects malfunction during 2 consecutive drive cycles. Possible causes are:

• Fuel Tank Pressure (FTP) sensor malfunction.
• ECM (PCM) malfunction.