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P1743 – Mazda DTC

Mazda DTC P1743 – Torque Converter Clutch Failed On – TCIL is On

DTC P1743 meaning on Mazda

DTC P1743 on a Mazda indicates that the Torque Converter Clutch has failed to engage properly. This fault triggers the Transmission Control Indicator Light (TCIL) to illuminate on the dashboard.

Mazda DTC P1743 symptoms

  • Transmission slipping
  • Harsh shifting
  • Poor fuel economy
  • Engine stalling at idle

Mazda DTC P1743 causes

  • Low transmission fluid level
  • Dirty or contaminated transmission fluid
  • Malfunctioning torque converter clutch solenoid
  • Internal transmission damage

Mazda DTC P1743 seriousness

The DTC P1743 code should not be ignored as it can lead to further damage to the transmission if left unresolved. Driving with this issue can cause additional wear and potentially result in costly repairs.

How to diagnose DTC P1743 on Mazda

  1. Use a diagnostic scanner to retrieve the trouble codes
  2. Inspect the transmission fluid level and condition
  3. Check for any visible leaks or damage to the transmission components
  4. Test the torque converter clutch solenoid for proper operation

How to fix DTC P1743 on Mazda

  1. Top up or replace the transmission fluid if low or contaminated
  2. Repair or replace the torque converter clutch solenoid if faulty
  3. Address any internal transmission damage as needed
  4. Clear the trouble codes and test drive the vehicle to ensure the issue is resolved

How to erase DTC P1743 on Mazda

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

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← All Mazda Diagnostic Trouble Codes

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