OBD Guide

P27D7

Pressure Control Solenoid S Control Circuit Low

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine light comes on
  • Deterioration of vehicle dynamics
  • System transition to emergency mode
  • Unstable engine operation
  • Possible problems with gear shifting (if related to the transmission)

Causes

  • Pressure control solenoid S malfunction
  • Open or short circuit in control circuit
  • Poor contact in solenoid connectors
  • Problems with the engine control unit
  • Corroded or damaged wiring

How to Fix

  1. Check the resistance of solenoid S
  2. Inspect the control circuit for damage
  3. Check the contacts in the solenoid and ECU connectors
  4. Replace solenoid if necessary
  5. Flash or replace the ECU if it is faulty

Related codes

Error P27D7 by Vehicle Brand