OBD Guide

P0C26

Electric/Auxiliary Transmission Fluid Pump A Motor Current

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine light comes on
  • Gear shifting problems
  • Transmission transition to emergency mode
  • Unusual noises from the transmission area
  • Reduced transmission efficiency

Causes

  • Pump motor malfunction
  • Open or short circuit in the power supply
  • Relay or fuse problems
  • Transmission control unit malfunction
  • Poor contact in connectors

How to Fix

  1. Check fuses and relays associated with the pump
  2. Diagnose the pump motor power supply circuit
  3. Check the resistance of the motor windings
  4. Inspect connectors and wiring harness for damage
  5. If necessary, replace the transmission fluid pump

Related codes

Error P0C26 by Vehicle Brand