OBD Guide
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B14BC

Passenger Seat Back Thermal Electric Device Circuit

B14BC is an OBD-II diagnostic trouble code meaning: Passenger Seat Back Thermal Electric Device Circuit. Common causes: break in heating power supply circuit, heating element malfunction. Estimated repair cost: $33–167.

Severity
✅ Low
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–167 (est.)

Symptoms

  • The heated backrest of the passenger seat does not work
  • Malfunction indicator on the dashboard
  • Triggering of the self-diagnosis system

Causes

  • Break in heating power supply circuit
  • Heating element malfunction
  • Wiring Harness Problems
  • Oxidation of contacts
  • Control module malfunction

How to Fix

  1. Check the heating circuit fuse
  2. Inspect the wiring harness for damage
  3. Ring the heating element circuit
  4. Check heater resistance
  5. Diagnose the control module if necessary

Related codes

B14BBB14BDB14BA

FAQ

What does the B14BC code mean?

B14BC is an OBD-II diagnostic trouble code that indicates: Passenger Seat Back Thermal Electric Device Circuit

What causes a B14BC error code?

The most common causes of B14BC include: Break in heating power supply circuit; Heating element malfunction; Wiring Harness Problems; Oxidation of contacts.

How do I fix a B14BC diagnostic trouble code?

To fix B14BC: Check the heating circuit fuse. Inspect the wiring harness for damage. Ring the heating element circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B14BC?

Do not drive — repair immediately

How much does it cost to fix B14BC?

The estimated repair cost for B14BC is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat