AutoCodes – Chrysler – U1491 Chrysler

U1491 Chrysler 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 Chrysler 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 505

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 May 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1491 Chrysler 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 Chrysler - Implausible Fuel Level 2 Signal Received - AutoCodes.com — U1491 Chrysler Code - Implausible Fuel Level 2 Signal Received

What does this mean?

What are the Possible Causes of the DTC U1491 Chrysler?

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 Chrysler?

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 Chrysler 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 Chrysler code?

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

Need Help with the Code?

Get the U1491 Chrysler 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 Chrysler Code

1. What are common symptoms of OBDII code U1491 in a Chrysler vehicle?

The most common symptoms include erratic fuel gauge readings, incorrect fuel level display, and the fuel gauge needle fluctuating unexpectedly.

2. What does the OBDII code U1491 "Implausible Fuel Level 2 Signal Received" mean in a Chrysler?

This code indicates that the fuel level signal received by the vehicle's onboard computer is not within the expected range, leading to inaccurate fuel level readings.

3. What are possible causes of the U1491 code in a Chrysler?

Potential causes include a faulty fuel level sensor, wiring issues in the fuel level sensor circuit, a defective instrument cluster, or a problem with the powertrain control module (PCM).

4. How can I diagnose the U1491 code in my Chrysler?

Diagnosis typically involves checking the fuel level sensor for proper operation, inspecting the wiring for damage or loose connections, and using a scan tool to monitor the fuel level sensor data while manipulating the fuel level.

5. Can I still drive my Chrysler with the U1491 code present?

While the vehicle may still be operable with the U1491 code, it is not recommended to ignore the issue as it can lead to inaccurate fuel level readings and potential fuel-related problems. It is best to address the problem promptly.

6. How can I repair the U1491 code in my Chrysler?

Repair options may include replacing the fuel level sensor, repairing any damaged wiring, recalibrating the fuel level sensor, or reprogramming the PCM to correct the fuel level signal issue.

7. Will resetting the fault codes make the U1491 code disappear temporarily?

Resetting the fault codes may temporarily clear the U1491 code, but if the underlying issue causing the code is not addressed, it is likely to reappear once the vehicle is driven and the system detects the problem again.

8. Is the U1491 code specific to certain Chrysler models?

The U1491 code is commonly associated with Chrysler vehicles, including models such as the Chrysler 300, Pacifica, Town & Country, and others that utilize the OBDII system for diagnostics.

9. Can a DIY enthusiast fix the U1491 code issue in a Chrysler?

Depending on their skill level and access to tools, a knowledgeable DIY enthusiast may be able to diagnose and repair the U1491 code themselves by following repair guides and using proper diagnostic equipment.

10. How can I prevent the U1491 code from recurring in my Chrysler?

Regular maintenance, such as checking the fuel system components for proper operation and addressing any issues promptly, can help prevent the U1491 code from recurring in your Chrysler vehicle.