OBD Guide
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B1E99

Front Left Heater Control Circuit

B1E99 is an OBD-II diagnostic trouble code meaning: Front Left Heater Control Circuit. Common causes: open or short circuit in control circuit, heating element malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Front left seat heating does not work
  • Seat heating indicator flashes
  • Heating is unstable

Causes

  • Open or short circuit in control circuit
  • Heating element malfunction
  • Problems with the heating relay
  • Control module malfunction

How to Fix

  1. Check the integrity of wires and connections in the control circuit
  2. Check the heating element for resistance
  3. Check heating relay
  4. Check the control module for errors

Related codes

B1E98B1E9A

FAQ

What does the B1E99 code mean?

B1E99 is an OBD-II diagnostic trouble code that indicates: Front Left Heater Control Circuit

What causes a B1E99 error code?

The most common causes of B1E99 include: Open or short circuit in control circuit; Heating element malfunction; Problems with the heating relay; Control module malfunction.

How do I fix a B1E99 diagnostic trouble code?

To fix B1E99: Check the integrity of wires and connections in the control circuit. Check the heating element for resistance. Check heating relay. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1E99?

Limited driving only, diagnose soon

How much does it cost to fix B1E99?

The estimated repair cost for B1E99 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat