OBD Guide

P28DA

Clutch B Motor Position Sensor Circuit/Open

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Transmission of the gearbox into emergency mode
  • Difficulty shifting gears
  • Loss of engine power
  • Check Engine Light Illuminates
  • Unstable engine operation at idle

Causes

  • Broken wires in the sensor circuit
  • Poor contact in the sensor connector
  • Clutch motor position sensor fault B
  • Wiring harness damage
  • Problems with the transmission control unit

How to Fix

  1. Check the integrity of wires and connectors in the sensor circuit
  2. Test the resistance of the position sensor
  3. Check power and ground in the sensor circuit
  4. Replace clutch motor position sensor B if necessary
  5. Scan the control unit for additional errors

Related codes

Error P28DA by Vehicle Brand