AutoCodes – Ford – B1303 Ford

B1303 Ford Code - Accessory Delay Relay Coil Circuit Open

Quick Answer

The accessory delay relay receives voltage at all times from the Smart Junction Box (SJB). Common causes include Faulty Accessory Delay Relay, Accessory Delay Relay harness is open or shorted, Accessory Delay Relay circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: B1303 Ford indicates Accessory Delay Relay Coil Circuit Open.
Common causes: Common causes include Faulty Accessory Delay Relay, Accessory Delay Relay harness is open or shorted, Accessory Delay Relay circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 1,893

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1303 Ford Description

The accessory delay relay receives voltage at all times from the Smart Junction Box (SJB). The SJB controls the coil side ground of the accessory delay relay and activates the accessory delay relay when the ignition switch is in the ON position. The accessory delay relay remains active for an additional 10 minutes when the ignition switch is in the OFF position or until the driver door is opened. The accessory delay relay provides voltage to the door lock switches, power windows and roof opening panel (if equipped).

OBDII Code B1303 Ford - Accessory Delay Relay Coil Circuit Open - AutoCodes.com — B1303 Ford Code - Accessory Delay Relay Coil Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1303 Ford?

Faulty Accessory Delay Relay
Accessory Delay Relay harness is open or shorted
Accessory Delay Relay circuit poor electrical connection
Faulty Smart Junction Box (SJB)

How to Fix the DTC B1303 Ford?

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 B1303 Ford 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.

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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 B1303 Ford Code

1. What are common symptoms of OBDII code B1303 in a Ford vehicle?

The common symptoms of OBDII code B1303 in a Ford vehicle include accessory delays not functioning properly, interior lights staying on, and issues with power windows and locks.

2. What does the OBDII code B1303 Ford Accessory Delay Relay Coil Circuit Open mean?

The OBDII code B1303 Ford Accessory Delay Relay Coil Circuit Open indicates that there is an open circuit in the accessory delay relay coil circuit, causing the relay to not function properly.

3. What are possible causes of OBDII code B1303 in a Ford vehicle?

Possible causes of OBDII code B1303 in a Ford vehicle include a faulty accessory delay relay, damaged wiring or connectors in the relay circuit, or a malfunctioning accessory delay timer module.

4. How can I diagnose the OBDII code B1303 in my Ford vehicle?

Diagnosing OBDII code B1303 in a Ford vehicle involves inspecting the accessory delay relay, checking the wiring and connectors in the relay circuit for damage, and testing the accessory delay timer module for proper function.

5. How can I repair OBDII code B1303 in my Ford vehicle?

To repair OBDII code B1303 in a Ford vehicle, you may need to replace the faulty accessory delay relay, repair or replace damaged wiring or connectors in the relay circuit, or replace the malfunctioning accessory delay timer module.

6. Can OBDII code B1303 in a Ford vehicle cause any safety concerns?

While OBDII code B1303 in a Ford vehicle may not directly cause safety concerns, it can affect the proper functioning of accessories like interior lights, power windows, and locks, which may impact convenience and comfort while driving.

7. Is it safe to continue driving with OBDII code B1303 present in a Ford vehicle?

It is generally safe to continue driving with OBDII code B1303 present in a Ford vehicle, but it is recommended to address the issue promptly to ensure the proper functioning of accessories and prevent any inconvenience while driving.

8. Can OBDII code B1303 be cleared/reset in a Ford vehicle?

OBDII code B1303 can be cleared/reset in a Ford vehicle using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes. However, the underlying issue causing the code should be diagnosed and repaired to prevent it from reoccurring.

9. How much does it typically cost to repair OBDII code B1303 in a Ford vehicle?

The cost to repair OBDII code B1303 in a Ford vehicle can vary depending on the specific cause of the issue, the cost of parts needed for repair, and labor charges. It is recommended to consult a professional mechanic for an accurate estimate.

10. Are there any preventive measures to avoid OBDII code B1303 in a Ford vehicle?

To prevent OBDII code B1303 in a Ford vehicle, it is recommended to regularly check and maintain the electrical components related to the accessory delay system, such as the relay, wiring, and connectors, to ensure they are in good working condition.