OBD Guide

P27C7

Pressure Control Solenoid P Control Circuit Low

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Unstable engine operation
  • Difficulty shifting gears
  • Check engine light comes on
  • Reduced engine power
  • Switching to emergency mode

Causes

  • Open or short circuit in control circuit
  • Pressure control solenoid P malfunction
  • Transmission control module (TCM) problems
  • Corrosion or poor contact in connectors
  • Wiring harness damage

How to Fix

  1. Check the integrity of the solenoid control circuit
  2. Measure the solenoid resistance
  3. Inspect connectors and wiring harness for damage
  4. Replace pressure control solenoid P
  5. Diagnose the transmission control module (TCM)

Related codes

Error P27C7 by Vehicle Brand