AutoCodes – Ford – U0201 Ford

U0201 Ford Code - Lost Communication With Driver Rear Door 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 Driver Rear Door Module (DRDM), Driver Rear Door Module harness is open or shorted, Driver Rear Door 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: U0201 Ford indicates Lost Communication With Driver Rear Door Module.
Common causes: Common causes include Faulty Driver Rear Door Module (DRDM), Driver Rear Door Module harness is open or shorted, Driver Rear Door 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 1,446

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 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0201 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. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Driver Rear Door Module (DRDM) has not been received.

OBDII Code U0201 Ford - Lost Communication With Driver Rear Door Module - AutoCodes.com — U0201 Ford Code - Lost Communication With Driver Rear Door Module

What does this mean?

What are the Possible Causes of the DTC U0201 Ford?

Faulty Driver Rear Door Module (DRDM)
Driver Rear Door Module harness is open or shorted
Driver Rear Door Module circuit poor electrical connection

How to Fix the DTC U0201 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 U0201 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 U0201 Ford Code

1. What are common symptoms of the U0201 OBDII code indicating a lost communication with the driver rear door module in a Ford vehicle?

- Common symptoms include non-functional power windows or locks on the driver rear door, interior lights not working, and issues with the speaker or mirror controls.

2. What are some possible causes of the U0201 code in a Ford, signaling a communication loss with the driver rear door module?

- Potential causes include a faulty driver rear door module, damaged wiring or connectors, a blown fuse, or a malfunctioning body control module.

3. How can I diagnose the U0201 code related to lost communication with the driver rear door module in my Ford?

- Diagnosis typically involves checking the wiring and connectors for damage, testing the driver rear door module for functionality, and using a scan tool to communicate with the affected module.

4. Can I still drive my Ford with the U0201 code present, indicating a communication issue with the driver rear door module?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to avoid any inconvenience or potential safety concerns.

5. What steps can I take to repair the U0201 code for lost communication with the driver rear door module in my Ford?

- Repair options may include replacing the driver rear door module, repairing any damaged wiring or connectors, checking and replacing fuses if necessary, and reprogramming the body control module.

6. Is it possible to reset the U0201 OBDII code related to communication loss with the driver rear door module in a Ford without fixing the underlying issue?

- While clearing the code may temporarily turn off the warning light, it is crucial to address the root cause to prevent the code from reoccurring and ensure proper functioning of the affected systems.

7. Can weather conditions or water damage cause the U0201 code indicating lost communication with the driver rear door module in a Ford?

- Yes, exposure to water or extreme weather conditions can lead to corrosion in the wiring or connectors, potentially resulting in communication issues with the driver rear door module.

8. How much does it typically cost to repair the U0201 code for lost communication with the driver rear door module in a Ford at a professional auto repair shop?

- Repair costs can vary depending on the specific issue, but they may range from $100 to $500 or more, including parts and labor.

9. Are there any preventive maintenance tips to help avoid encountering the U0201 code related to communication loss with the driver rear door module in a Ford?

- Regularly inspecting the wiring and connectors, avoiding water exposure, and addressing any electrical issues promptly can help prevent communication failures with the driver rear door module.

10. Will the U0201 code for lost communication with the driver rear door module cause my Ford to fail an emissions test?

- The U0201 code itself is not directly related to emissions, so it should not cause your Ford to fail an emissions test. However, it is still important to address the issue for proper vehicle functionality.