OBD Guide

P07A7

Transmission Friction Element C Stuck On

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–278 (est.)

Symptoms

  • Incorrect gear shifting
  • Switching delays
  • Gear slip
  • Increased noise from the gearbox
  • Check Engine light comes on

Causes

  • Friction disc wear
  • Transmission fluid contamination or degradation
  • Hydraulic pressure problems
  • Control solenoid malfunction
  • Mechanical damage to the friction element

How to Fix

  1. Check the level and condition of the transmission fluid
  2. Diagnose pressure in the hydraulic system
  3. Check operation of control solenoids
  4. Run diagnostics with a scanner to determine the exact cause
  5. If necessary, replace friction elements or other damaged parts

Related codes

Error P07A7 by Vehicle Brand