AutoCodes – Lincoln – B1507 Lincoln

B1507 Lincoln Code - Flash To Pass Switch Circuit Failure

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: B1507 Lincoln indicates Flash To Pass Switch Circuit Failure.
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 780

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 29, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1507 Lincoln 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 B1507 Lincoln - Flash To Pass Switch Circuit Failure - AutoCodes.com — B1507 Lincoln Code - Flash To Pass Switch Circuit Failure

What does this mean?

What are the Possible Causes of the DTC B1507 Lincoln?

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 B1507 Lincoln?

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 B1507 Lincoln 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 B1507 Lincoln Code

1. What are the common symptoms of OBDII code B1507 in a Lincoln related to the Flash To Pass Switch Circuit Failure?

- Common symptoms include the inability to use the flash-to-pass feature, malfunctioning high beam headlights, or the high beams getting stuck in the on position.

2. What are the potential causes of the B1507 code indicating Flash To Pass Switch Circuit Failure in a Lincoln?

- The code B1507 can be triggered by issues such as a faulty flash-to-pass switch, damaged wiring or connectors in the circuit, or a malfunctioning control module.

3. How can I diagnose the Flash To Pass Switch Circuit Failure on my Lincoln if I suspect OBDII code B1507?

- To diagnose the issue, you can perform a visual inspection of the wiring and connectors, check the flash-to-pass switch for proper operation, and use a diagnostic scanner to retrieve the specific trouble codes.

4. Can I still drive my Lincoln if the B1507 code related to Flash To Pass Switch Circuit Failure is present?

- While driving with this code may not pose an immediate safety risk, it's important to address the issue promptly to ensure the proper functioning of your high beam headlights and flash-to-pass feature.

5. How can I reset the OBDII code B1507 in a Lincoln after repairing the Flash To Pass Switch Circuit Failure?

- After fixing the underlying issue, you can reset the code using an OBDII scanner or by disconnecting the car's battery for a few minutes to clear the fault codes.

6. Are there any DIY repair tips for addressing the Flash To Pass Switch Circuit Failure associated with the B1507 code in a Lincoln?

- DIY enthusiasts can start by checking and cleaning the flash-to-pass switch, inspecting the wiring for any visible damage, and ensuring all connectors are securely attached before seeking professional assistance if needed.

7. How much does it typically cost to repair the Flash To Pass Switch Circuit Failure causing the B1507 code in a Lincoln?

- Repair costs can vary depending on the exact cause of the issue, but they may range from $100 to $300 for parts and labor if professional assistance is required.

8. What other OBDII codes might be related to the Flash To Pass Switch Circuit Failure in a Lincoln besides B1507?

- Other related codes may include B1505 (Flash To Pass Switch Input Circuit) or B1506 (Flash To Pass Switch Circuit Short to Ground).

9. Can extreme weather conditions or environmental factors contribute to triggering the B1507 code in a Lincoln?

- Yes, extreme temperatures, moisture, or corrosion in the electrical components of the flash-to-pass circuit can potentially lead to the triggering of the B1507 code.

10. Is it necessary to visit a dealership or can any mechanic address the Flash To Pass Switch Circuit Failure causing the B1507 code in a Lincoln?

- In most cases, any qualified mechanic with experience in automotive electrical systems should be able to diagnose and repair the Flash To Pass Switch Circuit Failure triggering the B1507 code in a Lincoln.