OBD Guide
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B1523

Keyless Entry Circuit Failure

B1523 is an OBD-II diagnostic trouble code meaning: Keyless Entry Circuit Failure. Common causes: open or short circuit in wiring harness, faulty keyless entry control module. Estimated repair cost: $56–167.

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

Symptoms

  • Keyless entry system does not work
  • The car does not respond to the key fob
  • Check Engine light comes on

Causes

  • Open or short circuit in wiring harness
  • Faulty keyless entry control module
  • Damaged antennas or receivers
  • Low key fob battery
  • Circuit power problems

How to Fix

  1. Check the condition of the key fob battery
  2. Inspect the wiring harness for damage
  3. Check the performance of antennas and receivers
  4. Scan the control module for errors
  5. Replace faulty components

Related codes

B1524B1525

FAQ

What does the B1523 code mean?

B1523 is an OBD-II diagnostic trouble code that indicates: Keyless Entry Circuit Failure

What causes a B1523 error code?

The most common causes of B1523 include: Open or short circuit in wiring harness; Faulty keyless entry control module; Damaged antennas or receivers; Low key fob battery.

How do I fix a B1523 diagnostic trouble code?

To fix B1523: Check the condition of the key fob battery. Inspect the wiring harness for damage. Check the performance of antennas and receivers. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1523?

Limited driving only, diagnose soon

How much does it cost to fix B1523?

The estimated repair cost for B1523 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat