Fuel Level Sensor Signal 1 Open/Short
2014-2021 BMW i3 Range Extender
Description
The DME detected an open or short circuit in fuel level sensor signal 1. The fuel level reading is unreliable, which can affect fuel injection calculations and range estimation.
Symptoms
- Check Engine Light
- Fuel gauge reading incorrectly
- Fuel range display inaccurate
- Possible engine running issues
Common Causes
- Faulty fuel level sensor (sender unit)
- Damaged wiring to fuel level sensor
- Corroded connector at fuel tank
- Instrument cluster fault
Diagnostic Steps
- Test fuel level sensor resistance range
- Inspect wiring from tank to DME
- Check connector at fuel pump module
- Verify signal at DME connector
Repair Notes
Replace fuel level sensor or repair damaged wiring at the fuel tank.
Related Codes
Other Powertrain Codes
- P0070Ambient Air Temperature Sensor Circuit
- P0071Ambient Air Temperature Sensor Range/Performance
- P0072Ambient Air Temperature Sensor Circuit Low
- P0073Ambient Air Temperature Sensor Circuit High
- P0115Engine Coolant Temperature (ECT) Sensor 1 Circuit
- P0116ECT Sensor 1 Circuit Range/Performance
- P0117ECT Sensor 1 Circuit Low Input
- P0118ECT Sensor 1 Circuit High Input
- P0119ECT Sensor 1 Circuit Intermittent
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
P1250 on Other Vehicles
Common Questions
What does code P1250 mean on a 2014-2021 BMW i3?
P1250 stands for "Fuel Level Sensor Signal 1 Open/Short". The DME detected an open or short circuit in fuel level sensor signal 1. The fuel level reading is unreliable, which can affect fuel injection calculations and range estimation.
What are the symptoms of P1250 on a BMW i3?
Common symptoms of P1250 include: Check Engine Light, Fuel gauge reading incorrectly, Fuel range display inaccurate, Possible engine running issues.
What causes P1250 on a 2014-2021 BMW i3?
Common causes of P1250 include: Faulty fuel level sensor (sender unit), Damaged wiring to fuel level sensor, Corroded connector at fuel tank, Instrument cluster fault.