OBD Guide
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B243A

Left Front Seat Heating Switch

B243A is an OBD-II diagnostic trouble code meaning: Left Front Seat Heating Switch. Common causes: heating switch malfunction, open or short circuit in wiring harness. Estimated repair cost: $33–111.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Left front seat heating does not work
  • The heating indicator is flashing
  • The error is stored in the ECU memory

Causes

  • Heating switch malfunction
  • Open or short circuit in wiring harness
  • Problems with the heating control module
  • Poor contact in connectors

How to Fix

  1. Diagnostics of the switch circuit with a multimeter
  2. Checking connectors and wiring harness
  3. Replacing the heating switch if necessary
  4. Checking and flashing the control module

Related codes

B243BB243CB2435

FAQ

What does the B243A code mean?

B243A is an OBD-II diagnostic trouble code that indicates: Left Front Seat Heating Switch

What causes a B243A error code?

The most common causes of B243A include: Heating switch malfunction; Open or short circuit in wiring harness; Problems with the heating control module; Poor contact in connectors.

How do I fix a B243A diagnostic trouble code?

To fix B243A: Diagnostics of the switch circuit with a multimeter. Checking connectors and wiring harness. Replacing the heating switch if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B243A?

Yes, but get it checked soon

How much does it cost to fix B243A?

The estimated repair cost for B243A is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat