AutoCodes – Ford – B1320 Ford

B1320 Ford Code - Driver Door Ajar Circuit Open

Quick Answer

The Smart Junction Box (SJB) sends a voltage signal to the door ajar switches. Common causes include Faulty Driver Door Ajar Switch, Driver Door Ajar Switch harness is open or shorted, Driver Door Ajar Switch circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B1320 Ford indicates Driver Door Ajar Circuit Open.
Common causes: Common causes include Faulty Driver Door Ajar Switch, Driver Door Ajar Switch harness is open or shorted, Driver Door Ajar Switch circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 5,711

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 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 B1320 Ford Description

The Smart Junction Box (SJB) sends a voltage signal to the door ajar switches. The door ajar switch is closed with the door closed. When the door is opened, the signal to ground is interrupted indicating an open door to the SJB. The Diagnostic Trouble Code (DTC) sets when the SJB detects an open from the LH front door ajar input circuit.

OBDII Code B1320 Ford - Driver Door Ajar Circuit Open - AutoCodes.com — B1320 Ford Code - Driver Door Ajar Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1320 Ford?

Faulty Driver Door Ajar Switch
Driver Door Ajar Switch harness is open or shorted
Driver Door Ajar Switch circuit poor electrical connection
Faulty Smart Junction Box (SJB)

How to Fix the DTC B1320 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 B1320 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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Get the B1320 Ford 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 B1320 Ford Code

1. What are the common symptoms of OBDII code B1320 for a Ford vehicle?

- The common symptoms include the interior lights staying on, door ajar warning light illuminated on the dashboard, and potential issues with power door locks.

2. What can cause the OBDII code B1320 "Driver Door Ajar Circuit Open" in a Ford car?

- The code B1320 is typically triggered by a faulty door ajar sensor, damaged wiring in the door circuit, or a malfunctioning body control module.

3. How can I diagnose the OBDII code B1320 in my Ford vehicle?

- Start by visually inspecting the door ajar sensor and wiring for any visible damage. Using a multimeter, test the continuity of the circuit to identify any open circuits causing the issue.

4. Can a malfunctioning door latch cause the OBDII code B1320 in a Ford car?

- Yes, a faulty door latch that fails to properly signal the door's status to the control module can also trigger the B1320 code.

5. What are some repair tips for fixing the OBDII code B1320 in a Ford vehicle?

- Repair options may include replacing the door ajar sensor, repairing damaged wiring, resetting the body control module, or replacing the door latch assembly if necessary.

6. Is it safe to continue driving my Ford vehicle with the OBDII code B1320 present?

- While the code B1320 is not a critical issue for vehicle operation, it can cause inconvenience and potential safety concerns if the door ajar warning system is not functioning correctly.

7. Can I reset the OBDII code B1320 in my Ford car using an OBDII scanner?

- Yes, an OBDII scanner can be used to clear the B1320 code after the underlying issue has been diagnosed and repaired. However, if the problem persists, the code is likely to return.

8. Are there any recalls or service bulletins related to the OBDII code B1320 in Ford vehicles?

- It's recommended to check with a Ford dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any relevant recalls or service bulletins for your specific model.

9. How can I prevent the OBDII code B1320 from reoccurring in my Ford car?

- Regularly inspecting and maintaining the door ajar sensor, wiring, and door latch can help prevent the recurrence of the B1320 code. Addressing any issues promptly can also help avoid further complications.

10. Will fixing the OBDII code B1320 affect my vehicle's warranty?

- If your Ford vehicle is still under warranty, repairs related to the B1320 code may be covered depending on the warranty terms and conditions. It's advisable to consult with your dealership for warranty coverage details.