Pinpoint Test Ab : P04B5, P04B9, Or P04BA: Notes
Refer to Fuel Filler Door Release for schematic and connector information.
Normal Operation and Fault Conditions
The PCM monitors the fuel filler door ajar switch and sets a DTC if it detects a failure of the fuel filler door ajar input based on conditions after a refueling event.
If the fuel filler door is not fully closed after a refueling event, or the body exterior's fuel filler door is open from erroneously pressing the fuel door release button, a message displays during the third drive cycle to indicate the fuel filler door is not closed and a DTC sets.
PCM DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P04B5 | Fuel Fill Door Stuck Open | Sets when the PCM detects the body exterior's fuel filler door is open, the vehicle has been running for at least 5 minutes and the vehicle speed is greater than 11 km/h (7 mph) (for example, the fuel filler door was not closed after a refueling event). |
| P04B9 | Fuel Fill Door Position Sensor/Switch Circuit Low | Sets when the PCM detects the fuel filler door ajar switch input is short to ground. A fuel filler door that is never closed can cause this DTC to set. |
| P04BA | Fuel Fill Door Position Sensor/Switch Circuit High | Sets when the PCM detects the body exterior's fuel filler door did not open when the PCM activated the fuel filler door release relay. An open circuit to the fuel filler door ajar switch can cause this DTC to set. |
Possible Causes
- Wiring, terminals or connectors
- Fuel filler door ajar switch (part of the body exterior's fuel filler door assembly)
- PCM