OBD Guide
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B1F04

Mirror Fold Control Circuit

B1F04 is an OBD-II diagnostic trouble code meaning: Mirror Fold Control Circuit. Common causes: mirror motor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.

Severity
✅ Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Automatic folding mirrors do not work
  • Mirrors do not respond to commands from the control button
  • Intermittent operation of folding mirrors

Causes

  • Mirror motor malfunction
  • Open or short circuit in wiring harness
  • Oxidation of contacts in connectors
  • Mechanical jamming of the folding mechanism
  • Malfunction of the mirror control module

How to Fix

  1. Check with a mechanic whether the manual folding of the mirrors works
  2. Check power and ground at the mirror drive connector
  3. Check the condition of the wiring harness for damage
  4. Check the operation of the drive motor
  5. If necessary, replace the faulty component

Related codes

B1F00B1F01B1F03

FAQ

What does the B1F04 code mean?

B1F04 is an OBD-II diagnostic trouble code that indicates: Mirror Fold Control Circuit

What causes a B1F04 error code?

The most common causes of B1F04 include: Mirror motor malfunction; Open or short circuit in wiring harness; Oxidation of contacts in connectors; Mechanical jamming of the folding mechanism.

How do I fix a B1F04 diagnostic trouble code?

To fix B1F04: Check with a mechanic whether the manual folding of the mirrors works. Check power and ground at the mirror drive connector. Check the condition of the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1F04?

Limited driving only, diagnose soon

How much does it cost to fix B1F04?

The estimated repair cost for B1F04 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat