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P1789 – Mazda DTC

Mazda DTC P1789 – 3-2T/CCS Circuit Shorted

DTC P1789 meaning on Mazda

DTC P1789 on a Mazda refers to a fault with the 3-2T/CCS (3rd to 2nd Timing/Coast Clutch Solenoid) circuit. This diagnostic trouble code indicates that there is a short circuit detected in the 3-2T/CCS circuit.

Mazda DTC P1789 symptoms

Symptoms of DTC P1789 on a Mazda may include:

  • Harsh shifting between gears
  • Transmission slipping
  • Transmission not shifting properly
  • Check Engine Light (MIL) illuminated on the dashboard

Mazda DTC P1789 causes

Common causes of DTC P1789 on a Mazda include:

  • Short circuit in the 3-2T/CCS circuit
  • Wiring harness issues
  • Faulty 3-2T/CCS solenoid
  • Internal transmission problems

Mazda DTC P1789 seriousness

DTC P1789 should be addressed promptly as it can lead to drivability issues and potential damage to the transmission if left unresolved. Ignoring this fault may result in further transmission problems and increased repair costs.

How to diagnose DTC P1789 on Mazda

To diagnose DTC P1789 on a Mazda, a mechanic should perform the following steps:

  1. Use a diagnostic scanner to retrieve the trouble codes stored in the vehicle’s computer
  2. Inspect the 3-2T/CCS circuit for any visible damage or shorts
  3. Check the wiring harness for continuity and proper connections
  4. Test the 3-2T/CCS solenoid for proper operation
  5. Perform a thorough transmission inspection to rule out internal issues

How to fix DTC P1789 on Mazda

To fix DTC P1789 on a Mazda, the following steps can be taken:

  1. Repair any damaged wiring in the 3-2T/CCS circuit
  2. Replace the faulty 3-2T/CCS solenoid if necessary
  3. Address any internal transmission problems that may be causing the fault
  4. Clear the trouble codes from the vehicle’s computer after repairs

How to erase DTC P1789 on Mazda

To erase DTC P1789 on a Mazda, follow these steps:

  1. Use a diagnostic scanner to access the vehicle’s computer system
  2. Select the option to clear the trouble codes stored in the system
  3. Confirm the action and wait for the scanner to erase the DTC P1789 code
  4. Verify that the code has been successfully cleared by checking for any remaining trouble codes

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