B1320 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 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.
Code B1320 Description
What are the Possible Causes of the DTC B1320?
- 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?
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 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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Information for Specific Makes
- B1320 Ford — Driver Door Ajar Circuit Open
- B1320 Lincoln — Driver Door Ajar Circuit Open
- B1320 Mercury — Driver Door Ajar Circuit Open
Frequently Asked Questions about B1320 Code
1. What does the OBDII code B1320 mean?
B1320 indicates an open circuit in the driver door ajar circuit, meaning the system is not detecting the driver door's proper open or closed status.
2. What are the common symptoms of code B1320?
Symptoms include the dome light staying on, door ajar warning light illuminating, alarm system malfunction, or issues with automatic locking.
3. What causes the B1320 code to appear?
Common causes include a faulty door ajar switch, damaged or corroded wiring, a loose electrical connector, or a malfunctioning Body Control Module (BCM).
4. Can I drive my car with the B1320 code?
Yes, you can drive with this code, but it may cause inconvenience, such as battery drainage due to the dome light staying on or safety concerns with auto-lock systems.
5. How can I fix the B1320 code?
Inspect and repair or replace the driver door ajar switch, check wiring for damage or corrosion, and ensure all electrical connectors are secure.
6. How do I diagnose the B1320 code?
Start by scanning for codes, visually inspecting the door ajar switch and wiring, testing the circuit for continuity, and checking BCM data to confirm the fault.
7. What tools are needed to fix the B1320 code?
You'll need a multimeter, a scan tool with live data capability, and basic hand tools to inspect and repair the circuit or switch.
8. Is a faulty Body Control Module (BCM) a common cause of B1320?
A faulty BCM is less common but possible. Rule out wiring and switch issues before considering BCM replacement.
9. How much does it cost to repair the B1320 code?
Repair costs vary but typically range from $50 to $200 for parts and labor, depending on whether the door ajar switch or wiring needs repair.
10. Can I clear the B1320 code without fixing the issue?
You can clear the code with a scan tool, but it will likely return if the underlying problem is not addressed.
Discuss the causes and fixes for B1320 OBDII Code
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