OBD Guide

P28D2

Clutch B Motor Phase U-V-W Circuit Low

P28D2 is an OBD-II diagnostic trouble code meaning: Clutch B Motor Phase U-V-W Circuit Low. Common causes: short circuit in the clutch motor windings, damage to the wiring harness to the clutch motor. Estimated repair cost: $167โ€“556.

Severity
๐Ÿ”ด High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167โ€“556 (est.)

Symptoms

  • Jerks when shifting gears
  • Check engine light comes on
  • Transmission transition to emergency mode
  • Inability to engage certain gears
  • Unusual noises from the clutch area

Causes

  • Short circuit in the clutch motor windings
  • Damage to the wiring harness to the clutch motor
  • Corrosion or poor contact in connectors
  • Clutch control module malfunction
  • Mechanical damage to the electric motor

How to Fix

  1. Check the resistance of the motor windings
  2. Inspect the wiring harness and connectors for damage.
  3. Check the power and control signals to the clutch motor
  4. If necessary, replace the clutch motor
  5. Reflash or replace the control module if necessary

Related codes

Error P28D2 by Vehicle Brand

FAQ

What does the P28D2 code mean?

P28D2 is an OBD-II diagnostic trouble code that indicates: Clutch B Motor Phase U-V-W Circuit Low

What causes a P28D2 error code?

The most common causes of P28D2 include: Short circuit in the clutch motor windings; Damage to the wiring harness to the clutch motor; Corrosion or poor contact in connectors; Clutch control module malfunction.

How do I fix a P28D2 diagnostic trouble code?

To fix P28D2: Check the resistance of the motor windings. Inspect the wiring harness and connectors for damage.. Check the power and control signals to the clutch motor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P28D2?

Limited driving only, diagnose soon

How much does it cost to fix P28D2?

The estimated repair cost for P28D2 is $167โ€“556. Actual cost depends on your vehicle, location, and labor rates.

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