Subaru OBD-II 1996 & Newer models DTC P1590 – Neutral position switch circuit high input
DTC P1590 meaning on Subaru OBD-II 1996 & Newer models
DTC P1590 indicates a high 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 P1590 symptoms
- Check Engine Light (CEL) illuminated on the dashboard
- Transmission may not shift properly
- Vehicle may not start
Subaru OBD-II 1996 & Newer models DTC P1590 causes
- Faulty neutral position switch
- Wiring or connector issues in the neutral position switch circuit
- ECU (Engine Control Unit) malfunction
Subaru OBD-II 1996 & Newer models DTC P1590 seriousness
The seriousness of DTC P1590 lies in the potential drivability issues it can cause, such as improper shifting or starting problems. It is recommended to address this issue promptly to avoid further complications.
How to diagnose DTC P1590 on Subaru OBD-II 1996 & Newer models
- Use an OBD-II scanner to retrieve the trouble codes and confirm the presence of P1590.
- Inspect the neutral position switch and its wiring for any visible damage or corrosion.
- Check the connector for proper connection and signs of damage.
- Perform a continuity test on the switch and wiring to identify any open circuits.
How to fix DTC P1590 on Subaru OBD-II 1996 & Newer models
- Replace the neutral position switch if it is found to be faulty.
- Repair or replace any damaged wiring or connectors in the circuit.
- If the ECU is suspected to be the issue, consult a professional for further diagnosis and repair.
How to erase DTC P1590 on Subaru OBD-II 1996 & Newer models
- After addressing the root cause of the issue, use an OBD-II scanner to clear the trouble codes.
- Follow the scanner’s instructions to erase the DTC P1590 code from the ECU’s memory.
- Ensure that the issue has been resolved before clearing the code to prevent it from reoccurring.
Recommended tools for Subaru OBD-II 1996 & Newer models diagnostics
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