B1464 Code - Seat Belt Switch Circuit Short To Battery

Quick Answer

The B1464 diagnostic trouble code indicates a seat belt switch circuit short to battery. Common causes include Short circuit in the seat belt switch wiring, Faulty seat belt switch, Corrosion or damage to the seat belt switch connector. 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

B1464 indicates Seat Belt Switch Circuit Short To Battery.

Common causes

Common causes include Short circuit in the seat belt switch wiring, Faulty seat belt switch, Corrosion or damage to the seat belt switch connector.

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.

• Description
• Common Causes
• Symptoms
• How To Fix
• Cost to Fix
• FAQs
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Common Causes of B1464

Symptoms of B1464

How to Fix B1464

Cost to Fix B1464

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Code B1464 Information for Specific Makes

• B1464 Chrysler — Channel 1 Audio Speaker Output Circuit Shorted Together
• B1464 Dodge — Channel 1 Audio Speaker Output Circuit Shorted Together
• B1464 Ford — Charge Port Light Ring LED Segment 4 No Sub Type Information
• B1464 Jeep — Channel 1 Audio Speaker Output Circuit Shorted Together
• B1464 Lincoln — Charge Port Light Ring LED Segment 4 No Sub Type Information
• B1464 Mercury — Charge Port Light Ring LED Segment 4 No Sub Type Information
• B1464 RAM — Channel 1 Audio Speaker Output Circuit Shorted Together

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

• Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
• Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
• Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
• Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B1464 Code

1. What does the OBDII code B1464 mean?

B1464 indicates a short circuit to the battery in the seat belt switch circuit, which monitors the status of the seat belt buckle.

2. What are the common symptoms of B1464?

Symptoms may include the seat belt warning light staying on or not illuminating, malfunctioning seat belt chime, or failure of related safety features.

3. What causes the B1464 code to appear?

Common causes include damaged seat belt switch wiring, a faulty seat belt switch, or a short circuit caused by frayed or exposed wires.

4. Can a blown fuse cause the B1464 code?

While a blown fuse is uncommon for this code, it’s possible if the short circuit causes excessive current draw. Inspect the fuse related to the seat belt system.

5. Is it safe to drive with the B1464 code?

While the vehicle may still be drivable, the seat belt system may not function properly, which poses a safety risk. Addressing the issue promptly is recommended.

6. How do I diagnose the B1464 code?

Start by inspecting the seat belt switch and its wiring for visible damage. Use a multimeter to check for continuity and ensure there’s no short to the battery.

7. What repairs can fix the B1464 code?

Repairs may include replacing damaged wiring, repairing shorts or exposed wires, or replacing the faulty seat belt switch.

8. Can I clear the B1464 code without fixing the issue?

Clearing the code without resolving the underlying problem will only result in the code returning. Proper diagnosis and repair are required.

9. How much does it cost to repair the B1464 code?

The cost varies depending on the issue. Wiring repairs can be inexpensive, while replacing a seat belt switch may cost $100–$300, including parts and labor.

10. Can a faulty seat belt switch cause other issues?

Yes, a faulty seat belt switch can impact the functionality of safety systems like airbags, as some systems rely on seat belt status for deployment logic.