OBD Guide

P0BEF

Drive Motor A Phase W Current Sensor Circuit Low

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Reduced motor power
  • Unstable operation of the hybrid system
  • Check Engine Light Illuminates
  • The car goes into emergency mode
  • Increased fuel consumption (for hybrids)

Causes

  • Phase W current sensor fault
  • Open or short circuit in the sensor circuit
  • Poor contact in circuit connectors
  • Problems with the motor control unit
  • Wiring harness damage

How to Fix

  1. Check the continuity of the current sensor circuit
  2. Inspect connectors and contacts for corrosion
  3. Test the current sensor with a multimeter
  4. Check the operation of the control unit
  5. Replace a faulty sensor or repair a circuit

Related codes

Error P0BEF by Vehicle Brand