OBD Guide
ENFRDEESPT

B103B

Thermoelectric Driver Overcurrent Low

B103B is an OBD-II diagnostic trouble code meaning: Thermoelectric Driver Overcurrent Low. Common causes: open or short circuit in wiring harness, thermoelectric driver 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 seat heating system
  • Climate control system failure
  • Flashing malfunction indicator on the instrument panel

Causes

  • Open or short circuit in wiring harness
  • Thermoelectric driver malfunction
  • Problems with the control module
  • Corrosion of contacts or connectors

How to Fix

  1. Check the integrity of the wiring harness and the condition of the connectors
  2. Test the thermoelectric driver for malfunctions
  3. Check the output signals of the control module
  4. Replace damaged components if necessary

Related codes

B103AB103CB103D

FAQ

What does the B103B code mean?

B103B is an OBD-II diagnostic trouble code that indicates: Thermoelectric Driver Overcurrent Low

What causes a B103B error code?

The most common causes of B103B include: Open or short circuit in wiring harness; Thermoelectric driver malfunction; Problems with the control module; Corrosion of contacts or connectors.

How do I fix a B103B diagnostic trouble code?

To fix B103B: Check the integrity of the wiring harness and the condition of the connectors. Test the thermoelectric driver for malfunctions. Check the output signals of the control module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B103B?

Limited driving only, diagnose soon

How much does it cost to fix B103B?

The estimated repair cost for B103B is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat