DTC P0450 - Fuel Tank Pressure Sensor Malfunction: Condition

DTC is set when fuel tank pressure sensor is less than .2 volts or greater than 4.9 volts with ignition switch on and engine at normal operating temperature. Possible causes are:

• Fuel tank pressure sensor malfunction.
• Open or short circuit between terminal "C" on fuel tank pressure sensor and terminal No. 3I on Powertrain Control Module (PCM).
• Open or short circuit between terminal "A" on fuel tank pressure sensor and terminal No. 3A on Powertrain Control Module (PCM).
• Open circuit between terminal "B" on fuel tank pressure sensor and terminal No. 3O on Powertrain Control Module (PCM).