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Engine-Codes – Generic – B1302

B1302 Code - Accessory Delay Relay Coil Circuit Failure

Quick Answer

The B1302 diagnostic trouble code indicates that there is a failure in the Accessory Delay Relay Coil Circuit. Common causes include Faulty accessory delay relay, Wiring or connection issues in the circuit, Corrosion or damage to the components related to the circuit. 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
B1302 indicates Accessory Delay Relay Coil Circuit Failure.
Common causes
Common causes include Faulty accessory delay relay, Wiring or connection issues in the circuit, Corrosion or damage to the components related to the circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code B1302 Description

The B1302 diagnostic trouble code indicates that there is a failure in the Accessory Delay Relay Coil Circuit. This circuit is responsible for controlling the delay of certain accessories in the vehicle, such as interior lights or power windows, after the ignition is turned off. When this circuit fails, it can lead to issues with these accessories not functioning properly or not turning off at the correct time.

OBDII Code B1302 - Accessory Delay Relay Coil Circuit Failure
B1302 Code - Accessory Delay Relay Coil Circuit Failure

Common Causes of B1302

  1. Faulty accessory delay relay.
  2. Wiring or connection issues in the circuit.
  3. Corrosion or damage to the components related to the circuit.
  4. Electrical system malfunction.
  5. Software issues in the vehicle's control module.

Symptoms of B1302

  1. Interior lights staying on longer than usual after the ignition is turned off.
  2. Power windows not operating correctly or having delays in response.
  3. Accessories not turning off even when the vehicle is parked and locked.
  4. Battery draining faster than normal due to accessories remaining on.

How to Fix B1302

  1. Perform a diagnostic scan to retrieve the specific trouble code and identify the affected circuit.
  2. Inspect the accessory delay relay and test its functionality.
  3. Check the wiring and connections in the circuit for any signs of damage or corrosion.
  4. Repair or replace any faulty components, such as the relay or damaged wiring.
  5. Clear the trouble code from the vehicle's system and test the affected accessories to ensure they are functioning properly.

Cost to Fix B1302

The typical repair costs for addressing a B1302 code related to Accessory Delay Relay Coil Circuit Failure can vary depending on the extent of the issue and the specific repairs needed. In general, the cost of parts for a relay replacement or wiring repair could range from $50 to $200. Labor costs at auto repair shops typically range between $80 and $150 per hour, but rates may vary based on location and the shop's expertise. Therefore, the total repair cost could range from $150 to $400 or more, depending on the specific circumstances. It's advisable to consult with a professional technician for a more accurate estimate based on your vehicle's make and model.

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Code B1302 Information for Specific Makes

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 B1302 Code

1. What are the common symptoms of OBDII code B1302 (Accessory Delay Relay Coil Circuit Failure)?

The common symptoms of OBDII code B1302 include accessory components failing to operate, such as power windows, radio, or interior lights, with a possible delay in their activation.

2. What can cause OBDII code B1302 to trigger?

OBDII code B1302 is typically triggered by a malfunction in the accessory delay relay coil circuit, which may be caused by a faulty relay, wiring issues, or a blown fuse.

3. How can I diagnose the cause of OBDII code B1302?

To diagnose the cause of OBDII code B1302, you can use a diagnostic scanner to read the code, inspect the accessory delay relay and its circuit for any visible damage, and perform continuity tests on the relay coil and related wiring.

4. Is it safe to continue driving with OBDII code B1302 present?

It is generally safe to continue driving with OBDII code B1302 present, as it primarily affects accessory components. However, it is recommended to address the issue promptly to avoid further electrical problems.

5. How can I repair OBDII code B1302 (Accessory Delay Relay Coil Circuit Failure)?

To repair OBDII code B1302, you may need to replace the faulty accessory delay relay, repair any damaged wiring or connectors in the circuit, and ensure proper functioning of the relay coil.

6. Can a DIY enthusiast fix OBDII code B1302 at home?

Depending on your automotive repair skills and knowledge, a DIY enthusiast may be able to fix OBDII code B1302 at home by following repair guides, using basic tools, and paying close attention to safety precautions.

7. Will resetting the OBDII system clear code B1302?

Resetting the OBDII system may temporarily clear code B1302, but if the underlying issue with the accessory delay relay coil circuit is not addressed, the code is likely to reappear upon detecting the fault again.

8. Are there any preventive measures to avoid OBDII code B1302 in the future?

Regularly inspecting and maintaining the electrical components in your vehicle, including the accessory delay relay and related wiring, can help prevent issues like OBDII code B1302 from occurring in the future.

9. Can extreme weather conditions contribute to triggering OBDII code B1302?

Extreme weather conditions, such as excessive heat or moisture, can potentially contribute to triggering OBDII code B1302 by affecting the electrical connections or components in the accessory delay relay circuit.

10. Will OBDII code B1302 affect the overall performance of my vehicle?

OBDII code B1302 is unlikely to directly affect the overall performance of your vehicle but may impact the functionality of certain accessory components. It is still important to address the issue promptly to ensure proper operation.

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