AutoCodes – Ford – B2664 Ford

B2664 Ford Code - Headlamp Relay Output Open Circuit or Short to Battery

Quick Answer

The Vehicle Security Module monitors the Headlamp Relay. Common causes include Faulty Headlamp Relay, Headlamp Relay harness is open or shorted, Headlamp Relay circuit poor electrical connection. 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: B2664 Ford indicates Headlamp Relay Output Open Circuit or Short to Battery.
Common causes: Common causes include Faulty Headlamp Relay, Headlamp Relay harness is open or shorted, Headlamp Relay circuit poor electrical connection.
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.

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Code Popularity 4,915

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2664 Ford Description

The Vehicle Security Module monitors the Headlamp Relay. The Vehicle Security Module sets the OBDII code when the Headlamp Relay is not to factory specifications.

OBDII Code B2664 Ford - Headlamp Relay Output Open Circuit or Short to Battery - AutoCodes.com — B2664 Ford Code - Headlamp Relay Output Open Circuit or Short to Battery

What does this mean?

What are the Possible Causes of the DTC B2664 Ford?

Faulty Headlamp Relay
Headlamp Relay harness is open or shorted
Headlamp Relay circuit poor electrical connection
Faulty Vehicle Security Module

How to Fix the DTC B2664 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 B2664 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.

Need more information about the B2664 Ford code?

Need more information on how to fix the B2664 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2664 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 B2664 Ford Code

1. What are the common symptoms of OBDII code B2664 Ford related to the headlamp relay output open circuit or short to battery?

- Common symptoms include malfunctioning headlights, flickering or dim headlights, or complete headlight failure.

2. What are the possible causes of OBDII code B2664 Ford indicating a headlamp relay output open circuit or short to battery?

- Possible causes include a faulty headlamp relay, damaged wiring or connectors, a short circuit in the headlight circuit, or a malfunctioning headlight switch.

3. How can I diagnose the issue related to OBDII code B2664 Ford for the headlamp relay output open circuit or short to battery?

- You can diagnose the issue by visually inspecting the headlamp wiring and connectors, testing the headlamp relay, checking for any shorts in the circuit, and using a multimeter to measure voltage at various points.

4. Is it safe to continue driving with OBDII code B2664 Ford indicating a headlamp relay output issue?

- It is not recommended to drive with a malfunctioning headlamp relay as it can compromise visibility and safety, especially during night driving or inclement weather conditions.

5. How can I repair OBDII code B2664 Ford for the headlamp relay output open circuit or short to battery?

- Repair involves identifying and fixing the root cause of the issue, which may include replacing the faulty headlamp relay, repairing damaged wiring, or addressing any short circuits in the headlight circuit.

6. Can resetting the OBDII system clear the B2664 Ford trouble code related to headlamp relay output problems?

- Resetting the OBDII system may temporarily clear the trouble code, but it will likely reappear if the underlying issue with the headlamp relay output circuit is not addressed.

7. Are there any specific tools or equipment needed to repair OBDII code B2664 Ford for headlamp relay output issues?

- Basic tools like a multimeter, wire strippers, electrical tape, and replacement headlamp relay may be needed for diagnosing and repairing the headlamp relay output problem.

8. How do I prevent OBDII code B2664 Ford from recurring in the future after repairing the headlamp relay output issue?

- To prevent the code from reoccurring, ensure proper installation of a new headlamp relay, check and secure all wiring and connectors, and perform regular maintenance checks on the headlight circuit.

9. Can a DIY enthusiast with basic automotive knowledge tackle the repair for OBDII code B2664 Ford related to headlamp relay output problems?

- A DIY enthusiast with basic automotive knowledge may be able to diagnose and repair the headlamp relay output issue, but if unsure, it is recommended to seek professional assistance to avoid any mistakes.

10. How long does it typically take to repair OBDII code B2664 Ford for headlamp relay output problems?

- The repair time can vary depending on the complexity of the issue and the individual's familiarity with automotive electrical systems, but it may take anywhere from 1-3 hours to complete the repair successfully.