Subaru OBD-II 1996 & Newer models DTC P1702 – Auto Trans Diagnosis Input Signal Circuit
DTC P1702 meaning on Subaru OBD-II 1996 & Newer models
DTC P1702 on Subaru OBD-II 1996 & Newer models indicates an issue with the Auto Trans Diagnosis Input Signal Circuit. This code is set when the Transmission Control Module (TCM) detects a malfunction in the input signal circuit related to the automatic transmission system.
Subaru OBD-II 1996 & Newer models DTC P1702 symptoms
- Check Engine Light (MIL) illuminated
- Transmission shifting issues
- Harsh shifting or slipping
- Reduced fuel efficiency
Subaru OBD-II 1996 & Newer models DTC P1702 causes
- Faulty transmission input speed sensor
- Wiring or connector issues in the input signal circuit
- Defective TCM
- Internal transmission problems
Subaru OBD-II 1996 & Newer models DTC P1702 seriousness
The seriousness of DTC P1702 on Subaru OBD-II 1996 & Newer models depends on the underlying cause. Ignoring this code can lead to further transmission damage and potential safety hazards. It is recommended to address this issue promptly to prevent more significant problems.
How to diagnose DTC P1702 on Subaru OBD-II 1996 & Newer models
- Use a scan tool to retrieve the DTC and freeze frame data
- Inspect the transmission input speed sensor and related wiring for damage
- Check the TCM for any signs of malfunction
- Perform a thorough visual inspection of the transmission system components
How to fix DTC P1702 on Subaru OBD-II 1996 & Newer models
- Replace the faulty transmission input speed sensor
- Repair or replace any damaged wiring or connectors in the input signal circuit
- If the TCM is defective, replace it with a new unit
- If internal transmission issues are found, consult a professional for repair or rebuild
How to erase DTC P1702 on Subaru OBD-II 1996 & Newer models
- Use a scan tool to clear the DTC and reset the Check Engine Light
- Ensure that the underlying issue causing DTC P1702 has been resolved before clearing the code
- Perform a road test to verify that the code does not return
Recommended tools for Subaru OBD-II 1996 & Newer models diagnostics
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