OBD Guide

P276B

Electric/Auxiliary Transmission Fluid Pump B Motor Supply Voltage Circuit Low

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

Symptoms

  • Check Engine light comes on
  • Gear shifting problems
  • Reduced transmission performance
  • Noises from the transmission area
  • Activating emergency gearbox operation

Causes

  • Damage to the pump wiring harness
  • Pump motor malfunction
  • Relay or fuse problems
  • Short circuit in the circuit
  • Bad contacts in connectors

How to Fix

  1. Check the pump fuse and relay
  2. Inspect the wiring harness for damage
  3. Check the voltage at the pump connector
  4. Test the pump motor
  5. If necessary, replace the transmission fluid pump

Related codes

Error P276B by Vehicle Brand