OBD Guide

P27A7

Pressure Control Solenoid A Data Incompatible

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–67 (est.)

Symptoms

  • Rough gear shifting
  • Check Engine Light Illuminates
  • Reduced transmission efficiency
  • Increased fuel consumption
  • Possible jerking when changing gears

Causes

  • Pressure control solenoid malfunction
  • Problems with wiring or contacts
  • Contaminated or low transmission fluid level
  • Mechanical damage in the system
  • Control module software errors

How to Fix

  1. Check the level and condition of the transmission fluid
  2. Diagnose the condition of the solenoid and its electrical circuit
  3. Clean or replace solenoid if necessary
  4. Check and update control module software
  5. Carry out a test drive to check the problem has been resolved.

Related codes

Error P27A7 by Vehicle Brand