AutoCodes – Ford – B1510 Ford

B1510 Ford Code - Flash To Pass Switch Circuit Short To Ground

Quick Answer

The Smart Junction Box (SJB) sends reference signals to the headlamp switch through circuits. Common causes include Faulty Headlamp Switch, Headlamp Switch harness is open or shorted, Headlamp Switch 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: B1510 Ford indicates Flash To Pass Switch Circuit Short To Ground.
Common causes: Common causes include Faulty Headlamp Switch, Headlamp Switch harness is open or shorted, Headlamp Switch 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 1,117

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 Apr 23, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1510 Ford Description

The Smart Junction Box (SJB) sends reference signals to the headlamp switch through circuits. When the headlamp switch is placed in the HEADLAMPS ON position, the voltage signal is routed to ground through the circuit. If the SJB detects a fault with the headlamp switch inputs, the SJB turns the exterior lamps on by default. When the SJB detects the headlamp switch in the HEADLAMPS ON position and the multifunction switch in the LOW BEAM position, the SJB sends voltage through circuits to the low beam headlamps. When the SJB detects the headlamp switch in the HEADLAMPS ON position and the multifunction switch in the HIGH BEAM position, the SJB sends voltage through circuits to the high beam headlamps. The SJB sends a reference signal to the multifunction switch through circuits CLF27 (GN/BN) and CLF17 (WH/OG). When the multifunction switch is placed in the FLASH-TO-PASS or HIGH BEAM position, the voltage signal is routed to ground. When the SJB detects a request for the flash-to-pass, the SJB sends voltage to the high beam headlamps. The OBDII codes when the SJB detects a short to ground from the flash-to-pass input circuit.

OBDII Code B1510 Ford - Flash To Pass Switch Circuit Short To Ground - AutoCodes.com — B1510 Ford Code - Flash To Pass Switch Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B1510 Ford?

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

How to Fix the DTC B1510 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 B1510 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 B1510 Ford Code

1. What are the common symptoms of OBDII code B1510 in a Ford vehicle?

- The common symptoms include the flash-to-pass switch not functioning, the high beam headlights not working correctly, or the high beam indicator staying illuminated.

2. What does the OBDII code B1510 "Flash To Pass Switch Circuit Short To Ground" mean in a Ford vehicle?

- This code indicates that there is a short to ground in the flash-to-pass switch circuit, preventing proper operation of the high beam headlights.

3. What are the possible causes of the Flash To Pass Switch Circuit Short To Ground OBDII code in a Ford?

- Possible causes include a faulty flash-to-pass switch, damaged wiring or connectors in the circuit, a short to ground in the wiring, or a malfunctioning high beam relay.

4. How can I diagnose the Flash To Pass Switch Circuit Short To Ground issue in my Ford vehicle?

- Start by visually inspecting the flash-to-pass switch, wiring, and connectors for any visible damage. Use a multimeter to test for continuity and shorts in the circuit to pinpoint the issue.

5. Can I repair the Flash To Pass Switch Circuit Short To Ground problem in my Ford at home?

- Depending on your experience level, you may be able to repair this issue at home by replacing the faulty flash-to-pass switch, repairing damaged wiring, or fixing any short to ground in the circuit.

6. Is it safe to continue driving with the B1510 OBDII code in my Ford?

- It is not recommended to drive with this code unresolved, as it can affect the proper functioning of your high beam headlights, potentially compromising visibility and safety while driving at night.

7. How much does it typically cost to repair the Flash To Pass Switch Circuit Short To Ground in a Ford?

- The cost of repairs can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor at a repair shop.

8. Are there any recalls or technical service bulletins related to the B1510 code in Ford vehicles?

- It's advisable to check with your local Ford dealership or visit the NHTSA website to see if there are any related recalls or technical service bulletins addressing this specific OBDII code.

9. Will resetting the OBDII code B1510 make it go away permanently?

- Resetting the code may temporarily clear the error, but if the underlying issue causing the code is not resolved, it is likely to reappear after driving the vehicle for some time.

10. How long does it take to repair the Flash To Pass Switch Circuit Short To Ground issue in a Ford?

- The repair time can vary depending on the exact cause of the problem and your mechanic's workload, but it typically takes between 1 to 2 hours to diagnose and address the issue.