Starter Switch Circuit Malfunction
2023-2024 Subaru Solterra Electric
Description
The PCM has detected a malfunction in the starter switch circuit. The signal from the ignition switch indicating a start request is not being received correctly by the PCM.
Symptoms
- Check Engine Light
- PCM may not recognize engine cranking state
- Fuel and ignition timing strategy may be incorrect during start
- Extended crank time
Common Causes
- Faulty ignition switch
- Wiring issue in starter switch signal circuit
- Corroded ignition switch connector
- Neutral safety switch issue affecting start signal
- PCM input circuit fault
Diagnostic Steps
- Check starter switch signal on scan tool during cranking
- Inspect ignition switch connector
- Test starter switch circuit wiring for continuity
- Check neutral safety switch
- Verify PCM receives crank signal
Repair Notes
Repair the ignition switch signal circuit or replace the ignition switch if faulty.
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
P1100 on Other Vehicles
Common Questions
What does code P1100 mean on a 2023-2024 Subaru Solterra?
P1100 stands for "Starter Switch Circuit Malfunction". The PCM has detected a malfunction in the starter switch circuit. The signal from the ignition switch indicating a start request is not being received correctly by the PCM.
What are the symptoms of P1100 on a Subaru Solterra?
Common symptoms of P1100 include: Check Engine Light, PCM may not recognize engine cranking state, Fuel and ignition timing strategy may be incorrect during start, Extended crank time.
What causes P1100 on a 2023-2024 Subaru Solterra?
Common causes of P1100 include: Faulty ignition switch, Wiring issue in starter switch signal circuit, Corroded ignition switch connector, Neutral safety switch issue affecting start signal, PCM input circuit fault.