AutoCodes – Lincoln – B1472 Lincoln

B1472 Lincoln Code - Lamp Headlamp Input 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: B1472 Lincoln indicates Lamp Headlamp Input 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 1,206

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 14, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1472 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 headlamps on request circuit or no input from the headlamp switch.

OBDII Code B1472 Lincoln - Lamp Headlamp Input Circuit Short To Ground - AutoCodes.com — B1472 Lincoln Code - Lamp Headlamp Input Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B1472 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 B1472 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 B1472 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.

Need more information about the B1472 Lincoln code?

Need more information on how to fix the B1472 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1472 Lincoln 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 B1472 Lincoln Code

1. What are the common symptoms of OBDII code B1472 on a Lincoln related to the headlamp input circuit?

- Dim or non-functioning headlamps, flickering lights, or a headlamp warning indicator on the dashboard.

2. What can cause the Lamp Headlamp Input Circuit Short To Ground error code B1472 on a Lincoln?

- Potential causes include damaged wiring, a faulty headlamp switch, a short circuit in the headlamp circuit, or a defective control module.

3. How can I diagnose the Lamp Headlamp Input Circuit Short To Ground code B1472 on my Lincoln?

- Use a multimeter to test the headlamp circuit for continuity, inspect the wiring for any visible damage, and check the headlamp switch for proper functionality.

4. Is it safe to drive my Lincoln with the B1472 OBDII code indicating a headlamp input circuit issue?

- It is not recommended to drive your vehicle with headlamp problems as it can compromise safety, especially in low-light conditions. Immediate attention is advised.

5. Can I repair the Lamp Headlamp Input Circuit Short To Ground issue on my Lincoln myself?

- If you have experience with automotive electrical systems, you may be able to troubleshoot and repair the issue. Otherwise, seeking professional help is recommended.

6. Will resetting the OBDII code B1472 on my Lincoln make the headlamp issue go away?

- Resetting the code may temporarily turn off the warning light, but it will not fix the underlying problem causing the headlamp input circuit issue.

7. What are some tips for preventing the Lamp Headlamp Input Circuit Short To Ground error code on a Lincoln?

- Regularly check and maintain the headlamp wiring, avoid overloading the circuit with aftermarket accessories, and promptly address any headlamp operation issues.

8. How much does it typically cost to repair the B1472 OBDII code related to the headlamp input circuit on a Lincoln?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a faulty headlamp bulb cause the Lamp Headlamp Input Circuit Short To Ground error code B1472 on a Lincoln?

- While a faulty headlamp bulb itself may not trigger this specific code, it can contribute to headlamp circuit issues if left unaddressed, potentially leading to related problems.

10. Are there any recalls or service bulletins related to the Lamp Headlamp Input Circuit Short To Ground code B1472 in Lincolns?

- It's advisable to check with a Lincoln dealership or visit the NHTSA website to see if there are any related recalls or service bulletins for this specific OBDII code.