AutoCodes – Dodge – U1503 Dodge

U1503 Dodge Code - Implausible Message Data Length Received From FCM

Quick Answer

The Diagnostic Trouble Code (DTC) will set when the Anti-Lock Brake Module detects an incorrect Controller Area Network (CAN) message from the Totally Integrated Power Module (TIPM). Common causes include Faulty Totally Integrated Power Module (TIPM), Totally Integrated Power Module harness is open or shorted, Totally Integrated Power 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: U1503 Dodge indicates Implausible Message Data Length Received From FCM.
Common causes: Common causes include Faulty Totally Integrated Power Module (TIPM), Totally Integrated Power Module harness is open or shorted, Totally Integrated Power 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 907

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 U1503 Dodge Description

The Diagnostic Trouble Code (DTC) will set when the Anti-Lock Brake Module detects an incorrect Controller Area Network (CAN) message from the Totally Integrated Power Module (TIPM).

OBDII Code U1503 Dodge - Implausible Message Data Length Received From FCM - AutoCodes.com — U1503 Dodge Code - Implausible Message Data Length Received From FCM

What does this mean?

What are the Possible Causes of the DTC U1503 Dodge?

Faulty Totally Integrated Power Module (TIPM)
Totally Integrated Power Module harness is open or shorted
Totally Integrated Power Module circuit poor electrical connection
Faulty Anti-Lock Brakes (ABS) Module

How to Fix the DTC U1503 Dodge?

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 U1503 Dodge 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 U1503 Dodge Code

1. What does the OBDII code U1503 for Dodge mean?

The code U1503 indicates an issue with the communication data length received from the FCM (Front Control Module).

2. What are the common symptoms of the U1503 code in a Dodge vehicle?

Common symptoms include dashboard warning lights, erratic behavior of electronic systems, and possible issues with the vehicle's transmission or engine performance.

3. What are the possible causes of the U1503 code in a Dodge?

Possible causes include faulty wiring or connections, a malfunctioning FCM, software issues, or a communication network problem within the vehicle.

4. How can I diagnose the U1503 code in my Dodge?

Diagnosing the U1503 code typically involves using a professional OBDII scanner to retrieve the specific fault codes, checking for any related stored codes, and conducting a thorough inspection of the FCM and its wiring.

5. Can I still drive my Dodge with the U1503 code present?

It is not recommended to drive your vehicle with the U1503 code present, as it can lead to potential safety hazards and further damage to the vehicle's electronic systems.

6. How can I repair the U1503 code in my Dodge?

Repairing the U1503 code may involve fixing any wiring issues, replacing the FCM if necessary, updating software, or addressing any communication network problems within the vehicle.

7. Will resetting the U1503 code make it go away permanently?

Resetting the code may temporarily clear the warning lights, but if the underlying issue causing the code is not addressed, it is likely to reappear.

8. Can a DIY enthusiast fix the U1503 code issue in a Dodge?

Depending on the specific cause of the code, some DIY enthusiasts may be able to address wiring issues or connections. However, more complex repairs involving the FCM or software may require professional assistance.

9. How much does it typically cost to repair the U1503 code in a Dodge?

The cost of repairing the U1503 code can vary depending on the cause of the issue, the extent of the repairs needed, and whether professional labor is required. It is advisable to consult a mechanic for a more accurate estimate.

10. Is the U1503 code specific to Dodge vehicles only?

The U1503 code may be specific to Dodge vehicles, as it relates to the Front Control Module. However, similar communication data length issues can occur in other vehicle makes and models as well.