AutoCodes – Ford – B1305 Ford

B1305 Ford Code - Accessory Delay Relay Coil Circuit Short To Ground

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: B1305 Ford indicates Accessory Delay Relay Coil Circuit Short To Ground.
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 4,986

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 B1305 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 B1305 Ford - Accessory Delay Relay Coil Circuit Short To Ground - AutoCodes.com — B1305 Ford Code - Accessory Delay Relay Coil Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B1305 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 B1305 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 B1305 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 B1305 Ford Code

1. What are the common symptoms of OBDII code B1305 in a Ford vehicle?

The common symptoms of OBDII code B1305 in a Ford vehicle include accessory delay functions not working properly, such as delayed power windows, radio, or interior lights.

2. What does the OBDII code B1305 Ford mean?

OBDII code B1305 in a Ford vehicle indicates a malfunction in the Accessory Delay Relay Coil Circuit Short To Ground.

3. What are the possible causes of OBDII code B1305 in a Ford vehicle?

Possible causes of OBDII code B1305 in a Ford vehicle include a short circuit in the accessory delay relay coil circuit, damaged wiring, or a faulty accessory delay relay.

4. How can I diagnose OBDII code B1305 in my Ford vehicle?

Diagnosing OBDII code B1305 in a Ford vehicle involves checking the wiring harness for any visible damage, testing the accessory delay relay, and using a multimeter to check for continuity and shorts in the circuit.

5. How can I repair OBDII code B1305 in a Ford vehicle?

To repair OBDII code B1305 in a Ford vehicle, you may need to replace the damaged wiring, repair any short circuits in the accessory delay relay coil circuit, or replace the faulty accessory delay relay.

6. Can OBDII code B1305 in a Ford vehicle cause any other issues?

While OBDII code B1305 itself may not cause major drivability issues, it can affect the proper functioning of accessory delay features in the vehicle, leading to inconvenience for the driver.

7. Is it safe to continue driving with OBDII code B1305 in a Ford vehicle?

It is generally safe to continue driving with OBDII code B1305 in a Ford vehicle, but it is recommended to address the issue promptly to ensure the proper functioning of accessory delay functions.

8. Can OBDII code B1305 be triggered by a loose electrical connection?

Yes, a loose electrical connection in the accessory delay relay coil circuit can potentially trigger OBDII code B1305 in a Ford vehicle.

9. How long does it typically take to repair OBDII code B1305 in a Ford vehicle?

The time taken to repair OBDII code B1305 in a Ford vehicle can vary depending on the exact cause of the issue, but it may take anywhere from 30 minutes to a few hours to diagnose and fix the problem.

10. Will resetting the OBDII system clear the B1305 code in a Ford vehicle?

Resetting the OBDII system may temporarily clear the B1305 code, but if the underlying issue causing the code is not addressed, it is likely to reappear after driving the vehicle again.