DTC Set Criteria
NOTE:
In rare cases, this DTC may set under some fuel and driving conditions regardless of fuel pressure sensor output voltage when fuel system is clogged.
- Intake air temperature is more than 41°F (5°C). Engine speed is 1600 RPM or more. Volumetric efficiency is 25-80 percent. Vehicle speed is 19 MPH or more. Purge solenoid is driven at 100 percent duty cycle when intake air temperature is 41-113°F (5-45°C). Code will set if Fuel Tank Differential Pressure (FTDP) sensor output voltage stays at 4 volts or more for 10 seconds.
- Intake air temperature is more than 41°F (5°C). Engine speed is 1600 RPM or more. Volumetric efficiency is 20-80 percent. Vehicle speed is 19 MPH or more. Purge solenoid is not driven when intake air temperature is 41°F (5°C) or more. Code will set if FTDP sensor output voltage stays at less than one volt for 10 seconds.
- Idle switch is on. Vehicle speed is less than one MPH. Engine speed is less than 2500 RPM. Powertrain Control Module (PCM) is looking for electrical noise on FTDP sensor circuit. Code will set if rapid voltage changes of 0.2 volt or more occur at least 20 times in 25 millisecond blocks for 8 consecutive idling periods.