OBD Guide
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B1A0C

Remote Keyless Entry Fob 5 Performance

B1A0C is an OBD-II diagnostic trouble code meaning: Remote Keyless Entry Fob 5 Performance. Common causes: low battery in key fob, physical damage to the key fob. Estimated repair cost: $6–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–111 (est.)

Symptoms

  • Remote door opening/closing does not work
  • Reduced range of the key fob
  • Key fob works intermittently

Causes

  • Low battery in key fob
  • Physical damage to the key fob
  • Receiver antenna malfunction
  • Broken or corroded system wiring harness
  • Key fob/ECU software failure

How to Fix

  1. Check and replace the key fob battery
  2. Carry out diagnostics of the antenna and wiring harness
  3. Reprogram the key fob
  4. Check/replace access control ECU (if necessary)

Related codes

B1A0DB1A0BB1A01

FAQ

What does the B1A0C code mean?

B1A0C is an OBD-II diagnostic trouble code that indicates: Remote Keyless Entry Fob 5 Performance

What causes a B1A0C error code?

The most common causes of B1A0C include: Low battery in key fob; Physical damage to the key fob; Receiver antenna malfunction; Broken or corroded system wiring harness.

How do I fix a B1A0C diagnostic trouble code?

To fix B1A0C: Check and replace the key fob battery. Carry out diagnostics of the antenna and wiring harness. Reprogram the key fob. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1A0C?

Limited driving only, diagnose soon

How much does it cost to fix B1A0C?

The estimated repair cost for B1A0C is $6–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat