AutoCodes – RAM – U1491 RAM

U1491 RAM Code - Implausible Fuel Level 2 Signal Received

Quick Answer

The Diagnostic Trouble Code (DTC) will set if the Module receives an implausible or Signal Not Available (SNA) fuel level message from the Body Control Module (BCM). Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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: U1491 RAM indicates Implausible Fuel Level 2 Signal Received.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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 597

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on May 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1491 RAM Description

The Diagnostic Trouble Code (DTC) will set if the Module receives an implausible or Signal Not Available (SNA) fuel level message from the Body Control Module (BCM).

OBDII Code U1491 RAM - Implausible Fuel Level 2 Signal Received - AutoCodes.com — U1491 RAM Code - Implausible Fuel Level 2 Signal Received

What does this mean?

What are the Possible Causes of the DTC U1491 RAM?

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

How to Fix the DTC U1491 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 U1491 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 U1491 RAM code?

Need more information on how to fix the U1491 RAM code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1491 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 U1491 RAM Code

1. What are the common symptoms of OBDII code U1491 RAM Implausible Fuel Level 2 Signal Received?

- Common symptoms may include incorrect fuel level readings on the dashboard, erratic fuel gauge behavior, and possible illumination of the check engine light.

2. What are the possible causes of OBDII code U1491 RAM?

- The code U1491 RAM typically indicates a communication error between the fuel level sensor and the vehicle's control module. This can be caused by wiring issues, sensor malfunctions, or software glitches.

3. How can I diagnose the U1491 RAM code?

- To diagnose the U1491 RAM code, a thorough inspection of the fuel level sensor, wiring harness, and related components is necessary. Additionally, using an OBDII scanner to retrieve and analyze the fault codes can help pinpoint the issue.

4. What are some repair tips for resolving the U1491 RAM code?

- Repair tips may include checking and repairing any damaged wiring, replacing the faulty fuel level sensor, ensuring proper connections, and clearing the fault codes to reset the system.

5. Can driving with the U1491 RAM code cause any further damage?

- While driving with the U1491 RAM code may not directly cause damage, it can lead to inaccurate fuel level readings and potential inconvenience. It is recommended to address the issue promptly to ensure proper functioning of the fuel system.

6. Is the U1491 RAM code a serious issue?

- The U1491 RAM code is not typically considered a serious issue in terms of safety or drivability. However, it can affect the accuracy of fuel level readings and should be addressed to prevent any inconvenience or potential future problems.

7. How much does it cost to repair the U1491 RAM code?

- The cost of repairing the U1491 RAM code can vary depending on the underlying cause of the issue, the labor rates of the repair shop, and the cost of any replacement parts needed. It is advisable to get a diagnostic assessment to determine the exact cost.

8. Can I reset the U1491 RAM code without fixing the underlying issue?

- While it is possible to clear the U1491 RAM code using an OBDII scanner, the underlying issue causing the fault code will still remain. It is essential to address the root cause of the problem to prevent the code from reoccurring.

9. How long does it take to repair the U1491 RAM code?

- The time needed to repair the U1491 RAM code can vary depending on the specific cause of the issue, the availability of parts, and the expertise of the technician. In some cases, it can be resolved within a few hours, while more complex issues may take longer.

10. Can I drive my vehicle with the U1491 RAM code?

- It is generally safe to drive your vehicle with the U1491 RAM code, but it is recommended to address the issue promptly to ensure accurate fuel level readings and prevent any potential complications in the future.