DTC P1778 Acura

A T Lockup Solenoid Valve C Circuit Malfunction

A T Lockup Solenoid Valve C Circuit Malfunction

Description

Vehicle driven in 1st, 2nd, 3rd and 4th gears, and the PCM detected an unexpected voltage condition on the Solenoid C control circuit. Note: The D4 lamp on the dash will blink when this code is set.

Cause and Solution

Lockup solenoid C control circuit is open or shorted to ground
Lockup solenoid C circuit is shorted to system power
Lockup solenoid C is damaged or has failed

Video Guide

Duration: PT4M8S | Uploaded: 2020-04-19

Diagnostic Info

  • DTC Code: P1778
  • Brand: Acura
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