AutoCodes – Generic – B2937

B2937 Code - Gate Motor Short To Ground

Quick Answer

The Liftgate/Trunk Module (LTM) monitors the Gate Motor. Common causes include Faulty Gate Motor, Gate Motor harness is open or shorted, Gate Motor 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: B2937 indicates Gate Motor Short To Ground.
Common causes: Common causes include Faulty Gate Motor, Gate Motor harness is open or shorted, Gate Motor 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 1,450

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 Feb 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2937 Description

The Liftgate/Trunk Module (LTM) monitors the Gate Motor. The LTM sets the OBDII code when a continuous memory and on-demand Diagnostic Trouble Code (DTC) that sets when the LTM detects a short to ground on the power liftgate motor circuit(s) for more than 1 second.

OBDII Code B2937 - Gate Motor Short To Ground - AutoCodes.com — B2937 Code - Gate Motor Short To Ground

What does this mean?

What are the Possible Causes of the DTC B2937?

Faulty Gate Motor
Gate Motor harness is open or shorted
Gate Motor circuit poor electrical connection
Faulty Liftgate/Trunk Module (LTM)

How to Fix the DTC B2937?

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 B2937 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 B2937 code?

Need more information on how to fix the B2937 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2937 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2937 Ford — Gate Motor Short To Ground
B2937 Lincoln — Gate Motor Short To Ground
B2937 Mercury — Gate Motor Short To Ground

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 B2937 Code

1. What does the OBDII code B2937 mean?

Code B2937 indicates a "Gate Motor Short To Ground," meaning the circuit controlling the gate motor has an electrical short to ground.

2. What are the common symptoms of code B2937?

Symptoms may include a malfunctioning tailgate or liftgate, inoperative motor, unusual noises from the gate, or the inability to open or close the gate electronically.

3. What causes the B2937 code to appear?

Common causes include damaged wiring, corroded connectors, a failed gate motor, or a short circuit in the gate motor's electrical system.

4. Can I still operate my vehicle with a B2937 code?

Yes, the vehicle can still be driven, but the tailgate or liftgate may not function properly, which could be inconvenient or hazardous in certain situations.

5. How do I diagnose the B2937 code?

Start by visually inspecting the wiring and connectors for damage or corrosion. Use a multimeter to test for continuity and check for shorts to ground in the gate motor circuit.

6. What tools are needed to fix the B2937 code?

You'll typically need a multimeter, basic hand tools, a diagnostic scanner, and possibly wiring repair supplies like electrical tape and connectors.

7. Can a faulty gate motor cause the B2937 code?

Yes, a defective or internally shorted gate motor can trigger this code and should be tested or replaced if necessary.

8. How much does it cost to repair a B2937 code?

Repair costs vary, but replacing damaged wiring or connectors may cost $50â€“$200, while a new gate motor could range from $200â€“$500 plus labor.

9. Is the B2937 code a serious problem?

While it doesn't affect drivability, it can cause inconvenience or safety concerns if the tailgate or liftgate is stuck open or closed.

10. Can I fix the B2937 code myself?

If youâ€™re comfortable with electrical diagnostics and repairs, you may be able to fix it yourself by addressing wiring issues or replacing the gate motor. Otherwise, seek professional assistance.