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P1787 – Ford DTC

Ford DTC P1787 – Transmission system problems

DTC P1787 meaning on Ford

DTC P1787 on Ford vehicles indicates a problem with the Transmission system. This code specifically points to an issue with the 2-4 Brake Pressure Switch Circuit.

Ford DTC P1787 symptoms

  • Harsh shifting
  • Transmission slipping
  • Transmission may not shift into certain gears
  • Check Engine Light illuminated

Ford DTC P1787 causes

  • Faulty 2-4 Brake Pressure Switch
  • Wiring issues in the circuit
  • Low transmission fluid level
  • Internal transmission problems

Ford DTC P1787 seriousness

The seriousness of DTC P1787 on a Ford vehicle can vary. If left unresolved, it can lead to further transmission damage and potentially unsafe driving conditions. It is recommended to address this issue promptly.

How to diagnose DTC P1787 on Ford

  1. Use a diagnostic scanner to retrieve the trouble codes
  2. Inspect the 2-4 Brake Pressure Switch and its circuit for any visible damage
  3. Check the transmission fluid level and condition
  4. Perform a thorough visual inspection of the wiring harness connected to the switch

How to fix DTC P1787 on Ford

  1. Replace the faulty 2-4 Brake Pressure Switch
  2. Repair any damaged wiring in the circuit
  3. Ensure the transmission fluid level is correct and top up if necessary
  4. If internal transmission issues are found, consult a professional for further diagnosis and repair

How to erase DTC P1787 on Ford

  1. After fixing the underlying issue, use a diagnostic scanner to clear the trouble codes
  2. Drive the vehicle to allow the system to relearn and monitor for any recurrence of the code

Recommended tools for Ford diagnostics

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

← All Ford Diagnostic Trouble Codes

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