OBD Guide
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B1A72

Passive Entry Antenna 2 General Electric Failure

B1A72 is an OBD-II diagnostic trouble code meaning: Passive Entry Antenna 2 General Electric Failure. Common causes: open or short circuit in the antenna circuit, passive access antenna malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Passive access on one side of the car does not work
  • The security system malfunction indicator lights up
  • Problems with key recognition in a certain area

Causes

  • Open or short circuit in the antenna circuit
  • Passive access antenna malfunction
  • Problems with the access control module
  • Wiring harness damage

How to Fix

  1. Check the integrity of the wiring to the antenna
  2. Check the antenna resistance (compare with reference values)
  3. Inspect connectors for corrosion or damage
  4. Replace the antenna if necessary
  5. Check the operation of the system after repair

Related codes

B1A71B1A73B1A74

FAQ

What does the B1A72 code mean?

B1A72 is an OBD-II diagnostic trouble code that indicates: Passive Entry Antenna 2 General Electric Failure

What causes a B1A72 error code?

The most common causes of B1A72 include: Open or short circuit in the antenna circuit; Passive access antenna malfunction; Problems with the access control module; Wiring harness damage.

How do I fix a B1A72 diagnostic trouble code?

To fix B1A72: Check the integrity of the wiring to the antenna. Check the antenna resistance (compare with reference values). Inspect connectors for corrosion or damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1A72?

Yes, but get it checked soon

How much does it cost to fix B1A72?

The estimated repair cost for B1A72 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat