AutoCodes – Mercury – U0554 Mercury

U0554 Mercury Code - Invalid Data Received From Accessory Protocol Interface Module

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Accessory Protocol Interface Module, Accessory Protocol Interface Module harness is open or shorted, Accessory Protocol Interface 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: U0554 Mercury indicates Invalid Data Received From Accessory Protocol Interface Module.
Common causes: Common causes include Faulty Accessory Protocol Interface Module, Accessory Protocol Interface Module harness is open or shorted, Accessory Protocol Interface 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 514

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 Apr 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U0554 Mercury Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. Some devices are constantly receiving information from other devices through serial data communication network. The invalid data Diagnostic Trouble Code (DTC) will be set when a receiving device detects a discrepancy in the information it receives from the Accessory Protocol Interface Module causing its integrity to be questioned.

OBDII Code U0554 Mercury - Invalid Data Received From Accessory Protocol Interface Module - AutoCodes.com — U0554 Mercury Code - Invalid Data Received From Accessory Protocol Interface Module

What does this mean?

What are the Possible Causes of the DTC U0554 Mercury?

Faulty Accessory Protocol Interface Module
Accessory Protocol Interface Module harness is open or shorted
Accessory Protocol Interface Module circuit poor electrical connection

How to Fix the DTC U0554 Mercury?

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 U0554 Mercury 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 U0554 Mercury code?

Need more information on how to fix the U0554 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0554 Mercury 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 U0554 Mercury Code

1. What are common symptoms of OBDII code U0554 in a Mercury vehicle?

- Common symptoms include issues with various accessories such as power windows, locks, or mirrors not functioning properly, warning lights on the dashboard, and problems with the radio or climate control system.

2. What is the most likely cause of the U0554 code in a Mercury?

- The most likely cause of the U0554 code is a communication error between the accessory protocol interface module (APIM) and other modules in the vehicle, often due to a faulty APIM or wiring issue.

3. How can I diagnose the U0554 code in my Mercury?

- Diagnosing the U0554 code typically involves using a diagnostic scanner to retrieve the code, checking the APIM for any visible damage, and inspecting the wiring harness for any signs of wear or corrosion.

4. Can I still drive my Mercury with the U0554 code present?

- It is not recommended to drive your Mercury with the U0554 code present, as it can lead to further electrical issues and potential safety hazards by affecting critical vehicle systems.

5. How can I repair the U0554 code in my Mercury?

- Repairing the U0554 code often involves replacing the faulty APIM, repairing any damaged wiring, and clearing the code with a diagnostic scanner. It is recommended to seek assistance from a professional mechanic for a thorough repair.

6. Is the U0554 code a serious issue in a Mercury?

- The U0554 code should be addressed promptly as it can cause disruptions to various vehicle accessories and systems, impacting the overall functionality and safety of the vehicle.

7. Can a DIY enthusiast fix the U0554 code in a Mercury?

- While some DIY enthusiasts may have the skills to diagnose and repair the U0554 code, it is recommended to seek professional help due to the complexity of diagnosing communication errors in modern vehicles.

8. How often does the U0554 code occur in Mercury vehicles?

- The U0554 code can occur sporadically in Mercury vehicles, especially in models with advanced electronic systems that rely on the APIM for communication between modules.

9. Will disconnecting the battery reset the U0554 code in my Mercury?

- Disconnecting the battery may temporarily reset the U0554 code, but if the underlying issue with the APIM or wiring is not addressed, the code is likely to return.

10. Are there any recalls related to the U0554 code in Mercury vehicles?

- Recalls related to the U0554 code in Mercury vehicles are specific to certain models and model years. It is advisable to check with the manufacturer or a dealership for any relevant recalls.