DTC CI-112: Fuel Level Sensor Signal Shorted To Ground
- This DTC will set if resistance in fuel level sensor is less than 2 ohms for more than 10 seconds. If resistance in fuel level sensor is less than 2 ohms for more than 10 seconds, fuel gauge may read permanently empty and/or fuel gauge may read empty when tank is full.
- To correct this problem, turn ignition off. Disconnect fuel level sensor connector. Fuel level sensor is located below trunk compartment carpet. Measure resistance between fuel level sensor connector terminals. If resistance is 8-330 ohms, go to next step. If resistance is not 8-330 ohms, replace fuel level sensor and retest. See FUEL LEVEL SENSOR under REMOVAL & INSTALLATION.
- Turn ignition on. Measure voltage between fuel level sensor harness connector terminals. If voltage is 6-8 volts, go to next step. If voltage is not 6-8 volts, repair short to ground between instrument cluster connector terminal A5 (Yellow/Red wire) and fuel level sensor. See Fig 1. See WIRING DIAGRAMS .
- Turn ignition off. Remove fuel level sensor. See FUEL LEVEL SENSOR under REMOVAL & INSTALLATION. Turn sensor upside down. Measure resistance between fuel level sensor connector terminals. If resistance is not 8-12 ohms, replace fuel level sensor and retest. If resistance is 8-12 ohms, go to next step.
- Check fuel level sensor for intermittent short to ground. Check between instrument cluster connector terminal A5 (Yellow/Red wire) and fuel level sensor. See Fig 1. See WIRING DIAGRAMS .
Courtesy of VOLVO CARS OF NORTH AMERICA.