AutoCodes – Generic – B3182

B3182 Code - Left Rear Window Up Switch Circuit Low

Quick Answer

This Diagnostic Trouble Code (DTC) is generated by a passenger door window switch or a passenger door window switch circuit. Common causes include Faulty Left Rear Window Switch, Left Rear Window Switch harness is open or shorted, Left Rear Window 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: B3182 indicates Left Rear Window Up Switch Circuit Low.
Common causes: Common causes include Faulty Left Rear Window Switch, Left Rear Window Switch harness is open or shorted, Left Rear Window 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 522

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 Mar 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3182 Description

This Diagnostic Trouble Code (DTC) is generated by a passenger door window switch or a passenger door window switch circuit. Each passenger door window switch is mounted to the trim panel of the appropriate passenger door. The circuits and contacts of each passenger door window switch receive battery voltage and ground from the corresponding door module, i.e. Front Passenger Door Module (PDM), Left Rear Door Module (LRDM), or Right Rear Door Module (RRDM). When a passenger door window switch is operated, the switch contacts close and the associated door module interprets the flow of voltage as a specific request to move the window up or down. If conditions are correct for window operation to occur, the door module then powers the associated window motor and circuits to move the window.

OBDII Code B3182 - Left Rear Window Up Switch Circuit Low - AutoCodes.com — B3182 Code - Left Rear Window Up Switch Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3182?

Faulty Left Rear Window Switch
Left Rear Window Switch harness is open or shorted
Left Rear Window Switch circuit poor electrical connection
Faulty Left Rear Door Module (LRDM)

How to Fix the DTC B3182?

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 B3182 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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Need Help with the Code?

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Information for Specific Makes

B3182 Buick — Left Rear Window Up Switch Circuit Low
B3182 Cadillac — Left Rear Window Up Switch Circuit Low
B3182 Chevrolet — Left Rear Window Up Switch Circuit Low
B3182 GMC — Left Rear Window Up Switch Circuit Low

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 B3182 Code

1. What does the OBDII code B3182 mean?

B3182 indicates a low voltage condition in the circuit for the left rear window up switch, often caused by electrical or wiring issues.

2. What are the symptoms of code B3182?

Symptoms may include the left rear window not rolling up, intermittent operation, or no response when pressing the window switch.

3. What causes code B3182 to appear?

Common causes include a faulty window switch, damaged wiring or connectors, or a failing window motor.

4. Can a blown fuse trigger code B3182?

Yes, a blown fuse in the power window circuit can cause insufficient voltage, leading to this code.

5. How do I diagnose code B3182?

Start by checking the left rear window switch for proper function, inspecting the wiring for damage, and testing voltage at the switch and motor.

6. Can a bad window motor cause code B3182?

Yes, a failing window motor can draw excessive current or fail to operate properly, leading to a low voltage condition.

7. Is code B3182 likely to affect other windows?

No, this code specifically relates to the left rear window up switch circuit and should not impact other windows.

8. How can I fix code B3182?

Repairs may include replacing the window switch, repairing damaged wiring, or replacing the window motor if itâ€™s faulty.

9. Can I still drive with code B3182 active?

Yes, you can drive, but the left rear window may not function correctly, which could be inconvenient.

10. Will clearing the code fix the problem permanently?

No, clearing the code will erase it temporarily, but the underlying issue must be repaired to prevent the code from returning.

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