AutoCodes – RAM – B1991 RAM

B1991 RAM Code - Right Power Sliding Door Sensor Supply Circuit Low

Quick Answer

The Power Sliding Door Module monitors the Right Power Sliding Door Sensor Supply Circuit. Common causes include Faulty Right Power Sliding Door Sensor, Right Power Sliding Door Sensor harness is open or shorted, Right Power Sliding Door Sensor 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: B1991 RAM indicates Right Power Sliding Door Sensor Supply Circuit Low.
Common causes: Common causes include Faulty Right Power Sliding Door Sensor, Right Power Sliding Door Sensor harness is open or shorted, Right Power Sliding Door Sensor 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 691

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 04, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1991 RAM Description

The Power Sliding Door Module monitors the Right Power Sliding Door Sensor Supply Circuit. The Power Sliding Door Module sets the OBDII code when the Right Power Sliding Door Motor Sensor supply circuit voltage is below 1.0 volts.

OBDII Code B1991 RAM - Right Power Sliding Door Sensor Supply Circuit Low - AutoCodes.com — B1991 RAM Code - Right Power Sliding Door Sensor Supply Circuit Low

What does this mean?

What are the Possible Causes of the DTC B1991 RAM?

Faulty Right Power Sliding Door Sensor
Right Power Sliding Door Sensor harness is open or shorted
Right Power Sliding Door Sensor circuit poor electrical connection
Faulty Power Sliding Door Module

How to Fix the DTC B1991 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 B1991 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.

Need more information about the B1991 RAM code?

Need more information on how to fix the B1991 RAM code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1991 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 B1991 RAM Code

1. What are common symptoms of OBDII code B1991 RAM (Right Power Sliding Door Sensor Supply Circuit Low)?

- Common symptoms include difficulty opening or closing the right power sliding door, intermittent power door operation, and illuminated warning lights on the dashboard.

2. What can cause the OBDII code B1991 RAM to trigger?

- The code can be triggered by a malfunction in the right power sliding door sensor supply circuit, such as damaged wiring, a faulty sensor, or a poor electrical connection.

3. How can I diagnose the cause of OBDII code B1991 RAM?

- Diagnosing the issue involves inspecting the wiring harness, connectors, and sensor associated with the right power sliding door. Testing the sensor's voltage supply and ground connections may also be necessary.

4. What are some repair tips for resolving OBDII code B1991 RAM?

- Repair tips include checking and repairing damaged wiring, replacing a faulty sensor, cleaning electrical connections, and ensuring proper grounding throughout the circuit.

5. Can I reset OBDII code B1991 RAM without fixing the underlying issue?

- While clearing the code may temporarily turn off the warning light, it is not recommended to reset the code without addressing the root cause, as the issue may persist and potentially lead to further problems.

6. Is it safe to continue driving with OBDII code B1991 RAM active?

- It is generally not recommended to continue driving with the code active, as it can affect the functionality of the right power sliding door and may lead to safety concerns or further damage if left unresolved.

7. How do I prevent OBDII code B1991 RAM from recurring in the future?

- To prevent the code from recurring, it is important to perform regular maintenance checks on the right power sliding door system, including inspecting wiring and connectors for signs of wear or damage.

8. Can weather conditions affect OBDII code B1991 RAM?

- Weather conditions such as extreme heat or cold can potentially impact the performance of the right power sliding door sensor supply circuit, leading to the triggering of the B1991 RAM code.

9. Are there any common mistakes to avoid when troubleshooting OBDII code B1991 RAM?

- Common mistakes to avoid include overlooking simple wiring issues, ignoring intermittent symptoms, and failing to follow proper diagnostic procedures when troubleshooting the code.

10. How much does it typically cost to repair OBDII code B1991 RAM at a mechanic or dealership?

- Repair costs for OBDII code B1991 RAM can vary depending on the specific cause of the issue, but it is advisable to consult a professional for an accurate diagnosis and cost estimate.