OBD Guide
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B191F

Left Front Window Motor Control Circuit Low

B191F is an OBD-II diagnostic trouble code meaning: Left Front Window Motor Control Circuit Low. Common causes: wiring harness damage, window lift motor malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Incorrect operation of the left front window regulator
  • Slow motion glass
  • Complete failure of the window regulator

Causes

  • Wiring harness damage
  • Window lift motor malfunction
  • Problems with the control unit
  • Short circuit in the circuit

How to Fix

  1. Check wiring harness for damage
  2. Check the voltage at the power window motor
  3. Check the operation of the control unit
  4. Replace faulty components

Related codes

B1920B191EB191D

FAQ

What does the B191F code mean?

B191F is an OBD-II diagnostic trouble code that indicates: Left Front Window Motor Control Circuit Low

What causes a B191F error code?

The most common causes of B191F include: Wiring harness damage; Window lift motor malfunction; Problems with the control unit; Short circuit in the circuit.

How do I fix a B191F diagnostic trouble code?

To fix B191F: Check wiring harness for damage. Check the voltage at the power window motor. Check the operation of the control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B191F?

Limited driving only, diagnose soon

How much does it cost to fix B191F?

The estimated repair cost for B191F is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat