OBD Guide

P0B07

Electric/Auxiliary Transmission Fluid Pump Motor Phase W Current Low

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced transmission efficiency
  • Noises or vibrations from the pump
  • Gear shifting problems
  • Reduced performance in hybrid mode

Causes

  • Problems with the pump electrical circuit
  • Pump motor malfunction
  • Wiring harness damage
  • Pump control module malfunction
  • Poor contact in connectors

How to Fix

  1. Check the integrity of the pump electrical circuit
  2. Check the resistance of the pump motor windings
  3. Inspect connectors and wiring harness for damage
  4. Check the operation of the pump control module
  5. If necessary, replace the pump motor or its control module

Related codes

Error P0B07 by Vehicle Brand