AutoCodes – Ford – B1328 Ford

B1328 Ford Code - Passenger Door Ajar Circuit Open

Quick Answer

The Smart Junction Box (SJB) sends a voltage signal to the door ajar switches. Common causes include Faulty Passenger Door Ajar Switch, Passenger Door Ajar Switch harness is open or shorted, Passenger 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: B1328 Ford indicates Passenger Door Ajar Circuit Open.
Common causes: Common causes include Faulty Passenger Door Ajar Switch, Passenger Door Ajar Switch harness is open or shorted, Passenger 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 4,248

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 B1328 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 RH front door ajar input circuit.

OBDII Code B1328 Ford - Passenger Door Ajar Circuit Open - AutoCodes.com — B1328 Ford Code - Passenger Door Ajar Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1328 Ford?

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

How to Fix the DTC B1328 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 B1328 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 B1328 Ford Code

1. What are the common symptoms of OBDII code B1328 Ford (Passenger Door Ajar Circuit Open)?

- Common symptoms include the interior dome light staying on, the door ajar warning light on the dashboard being illuminated, and the power door locks not functioning properly.

2. What can cause the OBDII code B1328 Ford to trigger?

- The code can be triggered by a faulty door ajar switch, a broken wire in the door jamb, or a malfunctioning Body Control Module (BCM).

3. How can I diagnose the cause of the Passenger Door Ajar Circuit Open code?

- You can start by visually inspecting the door ajar switch and the wiring in the door jamb for any signs of damage. Using a multimeter to check for continuity in the circuit and testing the door ajar switch functionality are also recommended diagnostic steps.

4. Is it safe to continue driving with the B1328 Ford trouble code?

- It is generally safe to drive with this code, but it is important to address the issue promptly to avoid potential problems with the vehicle's electrical systems.

5. What are some repair tips for fixing the Passenger Door Ajar Circuit Open issue?

- Repair tips include cleaning the door ajar switch contacts, repairing any damaged wiring, and replacing the door ajar switch or the BCM if necessary.

6. Can a DIY enthusiast fix the B1328 Ford code at home?

- Yes, DIY enthusiasts with basic electrical knowledge and tools can attempt to fix the issue themselves by following repair guides and tutorials specific to their vehicle model.

7. How much does it typically cost to repair the Passenger Door Ajar Circuit Open problem?

- The cost of repairing this issue can vary depending on the exact cause of the problem and whether you choose to do the repairs yourself or take your vehicle to a mechanic. In general, the cost can range from $50 to $200 or more.

8. Will resetting the OBDII code B1328 Ford make the problem go away?

- Resetting the code may temporarily turn off the warning light, but it will not fix the underlying issue causing the code to trigger. It is important to diagnose and repair the root cause of the problem.

9. Can the Passenger Door Ajar Circuit Open code affect other systems in the vehicle?

- Yes, this code can affect other systems that rely on the door status information, such as the interior lighting, power door locks, and in some cases, the vehicle's security system.

10. How long does it take to repair the B1328 Ford trouble code?

- The repair time can vary depending on the specific cause of the issue and the expertise of the person performing the repairs. In general, it can take anywhere from 30 minutes to a few hours to fix the problem.