OBD Guide
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B2793

Transponder Chip Malfunction

B2793 is an OBD-II diagnostic trouble code meaning: Transponder Chip Malfunction. Common causes: damage to the transponder chip in the key, immobilizer antenna malfunction. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Engine won't start
  • The immobilizer indicator is flashing
  • Car stalls after starting

Causes

  • Damage to the transponder chip in the key
  • Immobilizer antenna malfunction
  • Open or short circuit in wiring harness
  • Malfunction of the immobilizer control unit

How to Fix

  1. Check the condition of the transponder chip in the key
  2. Diagnose the immobilizer antenna
  3. Check the integrity of the wiring harness
  4. If necessary, replace faulty components
  5. Reprogram the key or immobilizer

Related codes

B2791B2792B2794

FAQ

What does the B2793 code mean?

B2793 is an OBD-II diagnostic trouble code that indicates: Transponder Chip Malfunction

What causes a B2793 error code?

The most common causes of B2793 include: Damage to the transponder chip in the key; Immobilizer antenna malfunction; Open or short circuit in wiring harness; Malfunction of the immobilizer control unit.

How do I fix a B2793 diagnostic trouble code?

To fix B2793: Check the condition of the transponder chip in the key. Diagnose the immobilizer antenna. Check the integrity of the wiring harness. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2793?

Yes, but get it checked soon

How much does it cost to fix B2793?

The estimated repair cost for B2793 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat