AutoCodes – Ford – U042E Ford

U042E Ford Code - Invalid Data Received From Generator Control 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 Generator Control Module, Generator Control Module harness is open or shorted, Generator 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: U042E Ford indicates Invalid Data Received From Generator Control Module.
Common causes: Common causes include Faulty Generator Control Module, Generator Control Module harness is open or shorted, Generator 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 6,309

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 11, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U042E Ford 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 Generator Control Module causing its integrity to be questioned.

OBDII Code U042E Ford - Invalid Data Received From Generator Control Module - AutoCodes.com — U042E Ford Code - Invalid Data Received From Generator Control Module

What does this mean?

What are the Possible Causes of the DTC U042E Ford?

Faulty Generator Control Module
Generator Control Module harness is open or shorted
Generator Control Module circuit poor electrical connection

How to Fix the DTC U042E Ford?

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 U042E Ford 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 U042E Ford Code

1. What are common symptoms of the U042E Ford OBDII code?

- Common symptoms include issues with the vehicle's electrical system, such as dimming lights, erratic engine operation, and difficulty starting the engine.

2. What does the U042E code mean for Ford vehicles?

- The U042E code indicates that the Engine Control Module (ECM) has detected invalid data coming from the Generator Control Module (GCM).

3. What are possible causes of the U042E code in Ford vehicles?

- Possible causes include a faulty Generator Control Module, wiring or connection issues between the GCM and ECM, or a malfunction in the ECM itself.

4. How can I diagnose the U042E code in my Ford vehicle?

- Diagnosing the U042E code typically involves using a scan tool to retrieve the code and then conducting a thorough inspection of the GCM, wiring, and connections for any visible damage or issues.

5. Can I still drive my Ford vehicle with the U042E code present?

- It is not recommended to drive your vehicle with the U042E code present, as it can lead to further electrical system issues and potential damage to components.

6. What are some repair tips for fixing the U042E code in Ford vehicles?

- Repair tips may include checking and repairing any damaged wiring or connections, replacing the Generator Control Module, or reprogramming the ECM if necessary.

7. Is the U042E code a serious issue in Ford vehicles?

- The U042E code should be addressed promptly to prevent potential electrical system malfunctions and ensure the proper operation of the vehicle.

8. Can the U042E code be cleared with a simple reset?

- Clearing the U042E code with a reset may temporarily remove the warning light, but the underlying issue causing the code will need to be diagnosed and repaired to prevent it from reoccurring.

9. How much does it typically cost to repair the U042E code in a Ford vehicle?

- The cost of repairing the U042E code can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Can a DIY enthusiast fix the U042E code issue in a Ford vehicle?

- DIY enthusiasts with experience in automotive repair and access to the necessary tools may be able to diagnose and repair the U042E code, but it is recommended to seek professional help if unsure.