OBD Guide

B27D1

Starter Cut Relay Off Stuck

B27D1 is an OBD-II diagnostic trouble code meaning: Starter Cut Relay Off Stuck. Common causes: mechanical stuck starter relay, open or short circuit in the relay control circuit. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Engine won't start
  • Clicking sound when trying to start
  • The starter continues to operate after the engine starts
  • Increased noise during starter operation

Causes

  • Mechanical stuck starter relay
  • Open or short circuit in the relay control circuit
  • Problems with wiring or connectors
  • Engine control unit malfunction

How to Fix

  1. Check the condition of the starter relay
  2. Check the relay control circuit for opens and shorts
  3. Check connectors and wiring
  4. If necessary, replace the starter relay
  5. Check the operation of the starter after repair

Related codes

FAQ

What does the B27D1 code mean?

B27D1 is an OBD-II diagnostic trouble code that indicates: Starter Cut Relay Off Stuck

What causes a B27D1 error code?

The most common causes of B27D1 include: Mechanical stuck starter relay; Open or short circuit in the relay control circuit; Problems with wiring or connectors; Engine control unit malfunction.

How do I fix a B27D1 diagnostic trouble code?

To fix B27D1: Check the condition of the starter relay. Check the relay control circuit for opens and shorts. Check connectors and wiring. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B27D1?

Limited driving only, diagnose soon

How much does it cost to fix B27D1?

The estimated repair cost for B27D1 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat