AutoCodes – Lincoln – U0202 Lincoln

U0202 Lincoln Code - Lost Communication With Passenger 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 Passenger Rear Door Module (PRDM), Passenger Rear Door Module harness is open or shorted, Passenger 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: U0202 Lincoln indicates Lost Communication With Passenger Rear Door Module.
Common causes: Common causes include Faulty Passenger Rear Door Module (PRDM), Passenger Rear Door Module harness is open or shorted, Passenger 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 649

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 U0202 Lincoln 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 Passenger Rear Door Module (PRDM) has not been received.

OBDII Code U0202 Lincoln - Lost Communication With Passenger Rear Door Module - AutoCodes.com — U0202 Lincoln Code - Lost Communication With Passenger Rear Door Module

What does this mean?

What are the Possible Causes of the DTC U0202 Lincoln?

Faulty Passenger Rear Door Module (PRDM)
Passenger Rear Door Module harness is open or shorted
Passenger Rear Door Module circuit poor electrical connection

How to Fix the DTC U0202 Lincoln?

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 U0202 Lincoln 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 U0202 Lincoln Code

1. What does OBDII code U0202 mean on a Lincoln?

Code U0202 indicates a loss of communication with the Passenger Rear Door Module (PRDM), meaning the module is not responding to signals from the vehicle's control system.

2. What are the symptoms of code U0202 in a Lincoln?

Symptoms may include the passenger rear door not locking or unlocking, window operation issues, or the door not responding to any commands.

3. What causes code U0202 on a Lincoln?

Common causes include a faulty Passenger Rear Door Module, damaged wiring or connectors, a power supply issue, or a network communication error in the CAN bus.

4. Can a blown fuse cause code U0202 on a Lincoln?

Yes, a blown fuse that supplies power to the Passenger Rear Door Module can cause this communication error.

5. How do I diagnose code U0202 on a Lincoln?

Start by inspecting the wiring and connectors for damage or corrosion, check the relevant fuses, and use a scan tool to verify communication with the Passenger Rear Door Module.

6. Is it safe to drive with code U0202 on a Lincoln?

Yes, it is generally safe to drive, but the features controlled by the Passenger Rear Door Module, such as the door locks or window, may not function properly.

7. Can a software update fix code U0202 on a Lincoln?

In some cases, a software update for the vehicle's control modules may resolve communication issues, but this depends on the specific cause of the problem.

8. How much does it cost to repair code U0202 on a Lincoln?

Repair costs vary depending on the issue. Wiring repairs may cost $100-$300, while replacing the Passenger Rear Door Module can cost $200-$500 or more.

9. Can I fix code U0202 on a Lincoln myself?

If youâ€™re comfortable with basic electrical diagnostics, you can inspect and repair wiring or replace the module. However, advanced diagnostics may require professional tools and expertise.

10. Will disconnecting the battery clear code U0202 on a Lincoln?

Disconnecting the battery may temporarily clear the code, but if the underlying issue isnâ€™t resolved, the code will likely return.