OBD Guide
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B26F4

Starter Lock Relay Off

B26F4 is an OBD-II diagnostic trouble code meaning: Starter Lock Relay Off. Common causes: faulty starter interlock relay, open or short circuit in wiring harness. Estimated repair cost: $33–111.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Engine won't start
  • The starter does not work
  • The immobilizer indicator is flashing

Causes

  • Faulty starter interlock relay
  • Open or short circuit in wiring harness
  • Problems with the control module
  • Ignition switch malfunction

How to Fix

  1. Check the condition of the starter interlock relay
  2. Check the integrity of the wiring harness and contacts
  3. Scan the control module for other errors
  4. Replace relay or wiring if necessary

Related codes

B26F3B26F5

FAQ

What does the B26F4 code mean?

B26F4 is an OBD-II diagnostic trouble code that indicates: Starter Lock Relay Off

What causes a B26F4 error code?

The most common causes of B26F4 include: Faulty starter interlock relay; Open or short circuit in wiring harness; Problems with the control module; Ignition switch malfunction.

How do I fix a B26F4 diagnostic trouble code?

To fix B26F4: Check the condition of the starter interlock relay. Check the integrity of the wiring harness and contacts. Scan the control module for other errors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B26F4?

Yes, but get it checked soon

How much does it cost to fix B26F4?

The estimated repair cost for B26F4 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat