Subaru OBD-II 1996 & Newer models DTC P1591 – Neutral position switch circuit low input
DTC P1591 meaning on Subaru OBD-II 1996 & Newer models
DTC P1591 indicates a low input signal from the neutral position switch circuit in Subaru vehicles equipped with OBD-II systems from 1996 onwards.
Subaru OBD-II 1996 & Newer models DTC P1591 symptoms
- Check Engine Light (CEL) illuminated on the dashboard
- Difficulty starting the vehicle
- Problems shifting gears
Subaru OBD-II 1996 & Newer models DTC P1591 causes
- Faulty neutral position switch
- Wiring issues in the neutral position switch circuit
- Corrosion or poor connections in the circuit
Subaru OBD-II 1996 & Newer models DTC P1591 seriousness
The seriousness of DTC P1591 lies in the potential safety hazards associated with incorrect gear engagement due to a malfunctioning neutral position switch.
How to diagnose DTC P1591 on Subaru OBD-II 1996 & Newer models
- Use an OBD-II scanner to retrieve the trouble code
- Inspect the neutral position switch and its wiring for any visible damage or corrosion
- Test the switch for proper functionality using a multimeter
How to fix DTC P1591 on Subaru OBD-II 1996 & Newer models
- Replace the neutral position switch if it is found to be faulty
- Repair any damaged wiring or connectors in the circuit
- Clear the trouble code using the OBD-II scanner after repairs
How to erase DTC P1591 on Subaru OBD-II 1996 & Newer models
- Use an OBD-II scanner to access the vehicle’s diagnostic system
- Select the option to clear the trouble codes stored in the system
- Follow the on-screen prompts to confirm the code erasure