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P1686 – Honda DTC

Honda DTC P1686 – Automatic Transaxle FI Signal B Low Input

DTC P1686 meaning on Honda

DTC P1686 for Honda refers to the Automatic Transaxle FI Signal B Low Input. This diagnostic trouble code indicates that there is a low input signal detected in the Automatic Transaxle FI circuit B.

Honda DTC P1686 symptoms

Symptoms of DTC P1686 on a Honda may include:

  • Check Engine Light (MIL) illuminated
  • Transmission shifting issues
  • Reduced fuel efficiency

Honda DTC P1686 causes

Common causes of DTC P1686 on a Honda include:

  • Faulty Automatic Transaxle FI sensor
  • Wiring or connector issues in the Automatic Transaxle FI circuit
  • Internal transmission problems

Honda DTC P1686 seriousness

DTC P1686 should be addressed promptly as it can lead to transmission performance issues and potentially affect the overall drivability of the vehicle.

How to diagnose DTC P1686 on Honda

To diagnose DTC P1686 on a Honda, follow these steps:

  1. Use a diagnostic scanner to retrieve the trouble codes.
  2. Inspect the Automatic Transaxle FI sensor and its wiring for any visible damage.
  3. Check the connectors for proper connection and corrosion.
  4. Perform a circuit test to check for continuity and proper voltage.

How to fix DTC P1686 on Honda

To fix DTC P1686 on a Honda, you can:

  1. Replace the faulty Automatic Transaxle FI sensor.
  2. Repair or replace any damaged wiring or connectors in the circuit.
  3. Address any internal transmission issues if necessary.

How to erase DTC P1686 on Honda

To erase DTC P1686 on a Honda:

  1. Use a diagnostic scanner to clear the trouble codes.
  2. Ensure the issue has been resolved before clearing the codes.
  3. Perform a test drive to confirm the repair.

Recommended tools for Honda diagnostics

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Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

← All Honda Diagnostic Trouble Codes

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