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Engine-Codes – Ford – B1305 Ford

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

Quick Answer

The B1305 diagnostic trouble code for Ford vehicles indicates a problem with the Accessory Delay Relay Coil Circuit, specifically a short to ground. Common causes include Damaged wiring or connectors in the Accessory Delay Relay Circuit, Faulty Accessory Delay Relay, Corrosion in 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
B1305 Ford indicates Accessory Delay Relay Coil Circuit Short To Ground.
Common causes
Common causes include Damaged wiring or connectors in the Accessory Delay Relay Circuit, Faulty Accessory Delay Relay, Corrosion in 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 Aug 30, 2024
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Code B1305 Ford Description

The B1305 diagnostic trouble code for Ford vehicles indicates a problem with the Accessory Delay Relay Coil Circuit, specifically a short to ground. The Accessory Delay Relay is responsible for controlling power to various accessories in the vehicle, such as the power windows, radio, and interior lights, after the ignition is turned off. A short to ground in this circuit can disrupt the proper functioning of these accessories, leading to issues with their operation.

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

Common Causes of B1305 Ford

  1. Damaged wiring or connectors in the Accessory Delay Relay Circuit
  2. Faulty Accessory Delay Relay
  3. Corrosion in the circuit
  4. Short circuit caused by water or moisture intrusion
  5. Electrical system malfunctions

Symptoms of B1305 Ford

  1. Inoperative power windows or sunroof
  2. Interior lights not turning on or staying on
  3. Radio or infotainment system not functioning
  4. Keyless entry system not working
  5. Battery drain due to continuous power draw from affected accessories

How to Fix B1305 Ford

  1. Begin by diagnosing the specific cause of the short to ground in the Accessory Delay Relay Circuit using a multimeter or other diagnostic tools.
  2. Inspect the wiring and connectors for any damage, corrosion, or signs of wear. Repair or replace as necessary.
  3. Test the Accessory Delay Relay to determine if it is functioning correctly. Replace if faulty.
  4. Check for any signs of water intrusion or moisture that may be causing a short circuit. Address the source of the intrusion and repair any damaged components.
  5. Clear the diagnostic trouble code from the vehicle's computer system and test the affected accessories to ensure proper operation.

Cost to Fix B1305 Ford

The cost of repairing a B1305 code for a Ford vehicle can vary depending on the specific cause of the issue. On average, the repair costs can range from $100 to $300, including parts and labor. However, as mentioned earlier, labor rates at auto repair shops can vary, so it's recommended to check with local shops for a more accurate estimate based on your location and vehicle model.

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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.

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