DTC P0463-Fuel Level Sensor 1 Circuit High: Notes
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article.
- When Monitored:
Ignition on and battery voltage above 10.4 volts.
- Set Condition:
The fuel level sensor signal voltage at the PCM goes above 4.9 volts for more than 90 seconds. One Trip Fault. Three good trips to turn off the MIL.
| Possible Causes |
|---|
| (N4) FUEL LEVEL SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE |
| (N4) FUEL LEVEL SIGNAL CIRCUIT OPEN |
| (N5) FUEL LEVEL SENSOR RETURN CIRCUIT OPEN |
| FUEL LEVEL SENSOR |
| INSTRUMENT CLUSTER |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.