OBD Guide
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B2A01

Telematics Antenna Circuit

B2A01 is an OBD-II diagnostic trouble code meaning: Telematics Antenna Circuit. Common causes: broken or damaged antenna wiring harness, poor contact in the antenna or module connector. Estimated repair cost: $56–167.

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

Symptoms

  • Lack of connection with telematics services
  • Dashboard warning
  • Inability to make an emergency call
  • Problems with navigation or software updates

Causes

  • Broken or damaged antenna wiring harness
  • Poor contact in the antenna or module connector
  • Telematics antenna malfunction
  • Problems with the telematics module

How to Fix

  1. Check the integrity of the antenna wiring harness
  2. Inspect connectors for oxidation or damage
  3. Test the antenna for correct operation
  4. Check the telematics module for errors
  5. Replace antenna or wiring harness if necessary

Related codes

B2A00B2A02U0155

FAQ

What does the B2A01 code mean?

B2A01 is an OBD-II diagnostic trouble code that indicates: Telematics Antenna Circuit

What causes a B2A01 error code?

The most common causes of B2A01 include: Broken or damaged antenna wiring harness; Poor contact in the antenna or module connector; Telematics antenna malfunction; Problems with the telematics module.

How do I fix a B2A01 diagnostic trouble code?

To fix B2A01: Check the integrity of the antenna wiring harness. Inspect connectors for oxidation or damage. Test the antenna for correct operation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2A01?

Limited driving only, diagnose soon

How much does it cost to fix B2A01?

The estimated repair cost for B2A01 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat