AutoCodes – Generic – B1523

B1523 Code - Keyless Entry Circuit Failure

Quick Answer

The Body Control Module (BCM) monitors the Keyless Entry. Common causes include Faulty Keyless Entry, Keyless Entry harness is open or shorted, Keyless Entry circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1523 indicates Keyless Entry Circuit Failure.
Common causes: Common causes include Faulty Keyless Entry, Keyless Entry harness is open or shorted, Keyless Entry circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 4,352

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 29, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1523 Description

The Body Control Module (BCM) monitors the Keyless Entry. The BCM sets the OBDII code when the Keyless Entry is not to factory specifications.

OBDII Code B1523 - Keyless Entry Circuit Failure - AutoCodes.com — B1523 Code - Keyless Entry Circuit Failure

What does this mean?

What are the Possible Causes of the DTC B1523?

Faulty Keyless Entry
Keyless Entry harness is open or shorted
Keyless Entry circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1523?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1523 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1523 code?

Need more information on how to fix the B1523 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1523 code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1523 Code

1. What are the common symptoms of OBDII code B1523, Keyless Entry Circuit Failure?

- Common symptoms include the keyless entry system not working, difficulty unlocking or locking the vehicle remotely, and the key fob not working as expected.

2. What are the possible causes of OBDII code B1523, Keyless Entry Circuit Failure?

- Possible causes include a malfunctioning key fob, a dead battery in the key fob, damaged wiring in the keyless entry system, or a faulty receiver module in the vehicle.

3. How can I diagnose the cause of OBDII code B1523, Keyless Entry Circuit Failure?

- You can start by checking the battery in the key fob, testing the key fob on another vehicle, inspecting the wiring for any visible damage, and using a diagnostic tool to scan for any other related codes.

4. Can I still start and drive my vehicle with OBDII code B1523, Keyless Entry Circuit Failure?

- Yes, you can still start and drive your vehicle even if the keyless entry system is not working. However, it is recommended to address the issue promptly to ensure convenience and security.

5. How can I repair OBDII code B1523, Keyless Entry Circuit Failure?

- Depending on the cause, repairs may involve replacing the key fob battery, repairing damaged wiring, reprogramming the key fob, or replacing the receiver module in the vehicle.

6. Is it possible to reset OBDII code B1523, Keyless Entry Circuit Failure without repairs?

- Resetting the code without addressing the underlying issue may temporarily clear the code, but it is likely to reappear if the root cause is not fixed.

7. Can extreme weather conditions cause OBDII code B1523, Keyless Entry Circuit Failure?

- Yes, extreme temperatures or moisture can affect the key fob's functionality or damage the wiring in the keyless entry system, leading to the code B1523.

8. How do I prevent OBDII code B1523, Keyless Entry Circuit Failure from occurring again?

- Regularly checking and replacing the key fob battery, keeping the key fob away from water or extreme temperatures, and maintaining the keyless entry system can help prevent recurrence.

9. Should I attempt to repair OBDII code B1523, Keyless Entry Circuit Failure myself?

- If you have experience with automotive electrical systems and diagnostics, you may attempt some repairs yourself. Otherwise, it is recommended to seek professional help to avoid further complications.

10. Will OBDII code B1523, Keyless Entry Circuit Failure cause my vehicle to fail an emissions test?

- No, OBDII code B1523 is related to the keyless entry system and does not affect the emissions control of the vehicle. It will not cause your vehicle to fail an emissions test.