AutoCodes – GMC – B1441 2018 GMC Sierra

B1441 2018 GMC Sierra Code - Control Module Ignition OFF, Run, and Start Circuit

Quick Answer

The vehicle Power Mode Master (PMM) is the Body Control Module (BCM). Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition 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: B1441 2018 GMC Sierra indicates Control Module Ignition OFF, Run, and Start Circuit.
Common causes: Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition 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 196

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 17, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B1441 2018 GMC Sierra Description

The vehicle Power Mode Master (PMM) is the Body Control Module (BCM). The ignition switch is a low-current switch with multiple discrete circuits to the BCM. The BCM logic uses the ignition switch positions to identify the operator's desired power mode and activate specific discrete signals, and serial data messages for the operation of different subsystems as necessary. Other modules which have switched voltage inputs may operate in a default mode if the Power Mode Master serial data message does not match what the individual module can detect from its own connections.
The Power Mode Master will activate relays and other direct outputs of the Power Mode Master as needed according to the calculated power mode. Some relays controlled by the BCM are switched ignition voltage outputs that are pass-through circuits within the BCM directly from the ignition switch. If these circuits are short to ground, the B+ circuit fuse to the ignition switch will open.

OBDII Code B1441 2018 GMC Sierra - Control Module Ignition OFF, Run, and Start Circuit - AutoCodes.com — B1441 2018 GMC Sierra Code - Control Module Ignition OFF, Run, and Start Circuit

What does this mean?

What are the Possible Causes of the DTC B1441 2018 GMC Sierra?

Faulty Ignition Switch
Ignition Switch harness is open or shorted
Ignition Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1441 2018 GMC Sierra?

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 does this mean?

Code Tech Notes

B1441:01 Control Module Ignition OFF, Run, and Start Circuit Short to Battery
B1441:04 Control Module Ignition OFF, Run, and Start Circuit Short to Ground or Open

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1441 2018 GMC Sierra 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 B1441 2018 GMC Sierra code?

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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 B1441 2018 GMC Sierra Code

1. What does the OBDII code B1441 mean on a 2018 GMC Sierra?

The code B1441 indicates an issue with the Control Module Ignition OFF, Run, and Start Circuit, which monitors and controls the ignition states in the vehicle.

2. What are common symptoms of code B1441 in a 2018 GMC Sierra?

Symptoms may include difficulty starting the vehicle, the ignition not turning off properly, electrical accessories malfunctioning, or dashboard warning lights.

3. What causes code B1441 to appear on a 2018 GMC Sierra?

Possible causes include a faulty ignition switch, wiring or connector issues in the ignition circuit, a malfunctioning control module, or a blown fuse.

4. Can I drive my 2018 GMC Sierra with a B1441 code?

While the vehicle may still be drivable, ignoring this code can lead to further electrical system issues or starting problems. Itâ€™s best to diagnose and repair it promptly.

5. How is the B1441 code diagnosed in a 2018 GMC Sierra?

A technician will use a scan tool to confirm the code, inspect the ignition wiring and connectors, check the ignition switch, and test the control module for proper function.

6. How do you fix the B1441 code on a 2018 GMC Sierra?

Repairs may include replacing a faulty ignition switch, repairing or replacing damaged wiring, cleaning or tightening connectors, or reprogramming/replacing the control module.

7. What tools are needed to troubleshoot code B1441 on a 2018 GMC Sierra?

Youâ€™ll need a diagnostic scan tool, a multimeter for testing electrical circuits, and possibly a repair manual for wiring diagrams.

8. Could a dead battery cause the B1441 code in a 2018 GMC Sierra?

A dead or weak battery is unlikely to directly cause the code, but it can exacerbate electrical system issues. Ensure the battery is fully charged and in good condition.

9. Is the B1441 code specific to the 2018 GMC Sierra?

No, the B1441 code can appear on other GMC or GM vehicles with similar ignition systems, but the specific symptoms and fixes may vary.

10. How much does it cost to repair the B1441 code on a 2018 GMC Sierra?

Repair costs can vary widely, ranging from $50 for minor wiring repairs to $500 or more for parts and labor if the control module or ignition switch needs replacement.