AutoCodes – Chrysler – U1403 Chrysler

U1403 Chrysler Code - Implausible Fuel Level Signal Received

Quick Answer

The Fuel Level Sensor signal is a direct input to the Body Control Module (BCM). Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module harness is open or shorted, Powertrain 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: U1403 Chrysler indicates Implausible Fuel Level Signal Received.
Common causes: Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module harness is open or shorted, Powertrain 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 13,191

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 17, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1403 Chrysler Description

The Fuel Level Sensor signal is a direct input to the Body Control Module (BCM). The BCM transmits the fuel level message to the Powertrain Control Module (PCM) over the Controller Area Network (CAN) C bus. The Diagnostic Trouble Code (DTC) sets when the fuel level message that the Powertrain Control Module (PCM) is receiving is implausible. The circuit is continuously monitored.

OBDII Code U1403 Chrysler - Implausible Fuel Level Signal Received - AutoCodes.com — U1403 Chrysler Code - Implausible Fuel Level Signal Received

What does this mean?

What are the Possible Causes of the DTC U1403 Chrysler?

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

How to Fix the DTC U1403 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 U1403 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.

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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 U1403 Chrysler Code

1. What are the common symptoms of OBDII code U1403 in a Chrysler vehicle?

- Common symptoms include erratic fuel gauge readings, inaccurate fuel level display, and illumination of the check engine light.

2. What does the OBDII code U1403 "Implausible Fuel Level Signal Received" mean in a Chrysler?

- This code indicates that the vehicle's onboard computer has detected a discrepancy or inconsistency in the fuel level signal it is receiving.

3. What are the possible causes of the U1403 code in a Chrysler?

- The code could be triggered by a faulty fuel level sensor, wiring issues, a defective instrument cluster, or a problem with the vehicle's powertrain control module (PCM).

4. How can I diagnose the U1403 code in my Chrysler?

- Diagnosis typically involves checking the fuel level sensor and its wiring for any signs of damage or malfunction. A scan tool can also help pinpoint the exact cause of the issue.

5. Can driving with the U1403 code present cause any further damage to my Chrysler?

- While driving with this code may not immediately harm your vehicle, it is important to address the issue promptly to avoid potential fuel-related issues or inaccurate readings.

6. Is it safe to continue driving my Chrysler with the U1403 code illuminated?

- It is generally safe to drive the vehicle with this code, but it is recommended to have the issue diagnosed and repaired as soon as possible to ensure accurate fuel level readings.

7. How can I reset the U1403 code in my Chrysler?

- The code can be cleared using an OBDII scanner or by disconnecting the car's battery for a few minutes. However, the underlying issue should still be addressed to prevent the code from reoccurring.

8. Will the U1403 code in my Chrysler cause any impact on the vehicle's performance?

- This code typically does not affect the vehicle's performance directly, but it can cause inconvenience due to inaccurate fuel level readings.

9. How much does it typically cost to repair the U1403 code in a Chrysler?

- The repair cost can vary depending on the specific cause of the code. It may range from a simple sensor replacement to more complex wiring repairs, so it is best to consult a mechanic for an accurate estimate.

10. Can a DIY enthusiast fix the U1403 code issue in a Chrysler, or should I seek professional help?

- While some aspects of diagnosing and repairing the U1403 code can be tackled by DIY enthusiasts, it is recommended to seek professional help, especially for more complex issues like PCM or instrument cluster problems.