AutoCodes – RAM – B1987 RAM

B1987 RAM Code - Left Power Sliding Door Switch Stuck

Quick Answer

The Totally Integrated Power Module (TIPM) monitors the Left Power Sliding Door Switch. Common causes include Faulty Left Power Sliding Door Switch, Left Power Sliding Door Switch harness is open or shorted, Left Power Sliding Door 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: B1987 RAM indicates Left Power Sliding Door Switch Stuck.
Common causes: Common causes include Faulty Left Power Sliding Door Switch, Left Power Sliding Door Switch harness is open or shorted, Left Power Sliding Door 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 626

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 Aug 03, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1987 RAM Description

The Totally Integrated Power Module (TIPM) monitors the Left Power Sliding Door Switch. When the TIPM senses approximately 3.0 volts on the Left Power Sliding Door Switch circuit for longer than 10 seconds, this code will set.

OBDII Code B1987 RAM - Left Power Sliding Door Switch Stuck - AutoCodes.com — B1987 RAM Code - Left Power Sliding Door Switch Stuck

What does this mean?

What are the Possible Causes of the DTC B1987 RAM?

Faulty Left Power Sliding Door Switch
Left Power Sliding Door Switch harness is open or shorted
Left Power Sliding Door Switch circuit poor electrical connection
Faulty Totally Integrated Power Module (TIPM)

How to Fix the DTC B1987 RAM?

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 B1987 RAM 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?

Get the B1987 RAM 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 B1987 RAM Code

1. What does the OBDII code B1987 in a RAM vehicle mean?

The B1987 code indicates that the Left Power Sliding Door Switch is stuck or not functioning properly, often due to mechanical or electrical failure.

2. What are the symptoms of the B1987 code?

Common symptoms include the left power sliding door not opening or closing, erratic door operation, or no response when using the door switch.

3. What causes the B1987 code to appear?

The main causes are a faulty left power sliding door switch, damaged wiring or connections, or a malfunctioning door control module.

4. How can I diagnose the B1987 code?

Check the door switch for physical damage, inspect the wiring for corrosion or disconnection, and use a diagnostic scanner to confirm the root cause.

5. Can I still drive my vehicle with the B1987 code active?

Yes, the vehicle can still be driven, but the left power sliding door may not function correctly, which could be inconvenient or a safety concern.

6. How do I fix the B1987 code on my RAM vehicle?

Repairs may involve replacing the faulty door switch, repairing damaged wiring, or resetting the door control module.

7. How much does it cost to fix the B1987 code?

The repair cost depends on the root cause but typically ranges from $50 to $200 for parts and labor, depending on the repair shop and the specific issue.

8. Can a stuck sliding door switch cause other issues?

Yes, it may lead to battery drain if the system continuously tries to operate the door or other electrical malfunctions in the door system.

9. Will resetting the ECU clear the B1987 code?

Resetting the ECU may temporarily clear the code, but it will return if the underlying issue is not resolved.

10. Can I fix the B1987 code myself?

If you have basic automotive repair knowledge, you may be able to fix simple issues like replacing the switch or checking wiring. Complex repairs may require professional assistance.