OBD Guide
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B1A08

Remote Keyless Entry Fob 1 Performance

B1A08 is an OBD-II diagnostic trouble code meaning: Remote Keyless Entry Fob 1 Performance. Common causes: low key fob battery, damage to the receiver antenna. Estimated repair cost: $22–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–167 (est.)

Symptoms

  • Unstable response of the key fob to button presses
  • Increased remote control distance
  • Periodic refusals to open/close doors

Causes

  • Low key fob battery
  • Damage to the receiver antenna
  • Interference from other electronic devices
  • Remote control module malfunction
  • Broken or damaged wiring harness

How to Fix

  1. Replace the key fob battery (type CR2032 / CR2025 and analogues)
  2. Check the condition of the signal receiver antenna
  3. Re-sync the key fob with the car
  4. Check wiring harness and remote control module contacts
  5. Diagnostics and module replacement if necessary

Related codes

B1A09B1A0AB1A07

FAQ

What does the B1A08 code mean?

B1A08 is an OBD-II diagnostic trouble code that indicates: Remote Keyless Entry Fob 1 Performance

What causes a B1A08 error code?

The most common causes of B1A08 include: Low key fob battery; Damage to the receiver antenna; Interference from other electronic devices; Remote control module malfunction.

How do I fix a B1A08 diagnostic trouble code?

To fix B1A08: Replace the key fob battery (type CR2032 / CR2025 and analogues). Check the condition of the signal receiver antenna. Re-sync the key fob with the car. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1A08?

Yes, but get it checked soon

How much does it cost to fix B1A08?

The estimated repair cost for B1A08 is $22–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat