AutoCodes – Lincoln – U1243 Lincoln

U1243 Lincoln Code - Invalid Or Missing Data For Exterior Environment

Quick Answer

The Anti-lock Brake System (ABS) Module is on the Serial Communications Protocol (SCP) Communication network. Common causes include Faulty Network, Faulty Powertrain Control Module (PCM). 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: U1243 Lincoln indicates Invalid Or Missing Data For Exterior Environment.
Common causes: Common causes include Faulty Network, Faulty Powertrain Control Module (PCM).
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 585

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 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1243 Lincoln Description

The Anti-lock Brake System (ABS) Module is on the Serial Communications Protocol (SCP) Communication network. The ABS module controls the brake pressure to the 4 wheels to keep the vehicle under Control while braking. The ABS module also controls the stability assist and traction Control systems (if equipped). If one of the BUS wires becomes shorted to ground or battery voltage, or if some but not all termination resistors are lost, communications can continue at a degraded level.

OBDII Code U1243 Lincoln - Invalid Or Missing Data For Exterior Environment - AutoCodes.com — U1243 Lincoln Code - Invalid Or Missing Data For Exterior Environment

What does this mean?

What are the Possible Causes of the DTC U1243 Lincoln?

Faulty Network
Faulty Powertrain Control Module (PCM)

How to Fix the DTC U1243 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 U1243 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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Need Help with the Code?

Get the U1243 Lincoln 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 U1243 Lincoln Code

1. What are the common symptoms of OBDII code U1243 in a Lincoln vehicle?

- Common symptoms include malfunctioning exterior temperature display, incorrect ambient light readings, and issues with automatic headlights.

2. What can cause the OBDII code U1243 in a Lincoln car?

- The code U1243 is typically triggered by faulty sensors related to exterior environmental data, wiring issues, or a malfunctioning body control module.

3. How can I diagnose the U1243 code in my Lincoln for Invalid Or Missing Data For Exterior Environment?

- Diagnosis involves checking the wiring and connectors related to exterior environment sensors, testing the sensors themselves, and using a scan tool to retrieve and interpret trouble codes.

4. Can extreme weather conditions trigger the U1243 code in a Lincoln?

- Yes, extreme weather conditions like severe cold or excessive heat can sometimes cause the U1243 code due to sensor malfunctions or incorrect data readings.

5. What are the repair tips for resolving the U1243 code in a Lincoln vehicle?

- Repair tips include checking and repairing any damaged wiring, replacing faulty sensors, ensuring proper sensor calibration, and resetting the fault codes with a diagnostic tool.

6. Is it safe to continue driving my Lincoln with the U1243 code present?

- While the U1243 code itself may not affect the drivability of the vehicle, it is recommended to address the issue promptly to prevent potential problems with exterior lighting systems and other related functions.

7. Can a DIY enthusiast fix the U1243 code issue in a Lincoln, or is professional help necessary?

- Depending on your automotive repair skills and access to tools, DIY enthusiasts may be able to address the U1243 code by following proper diagnostic procedures and making necessary repairs. However, professional help is recommended if you are unsure or lack experience.

8. How much does it typically cost to repair the U1243 code in a Lincoln at a mechanic or dealership?

- Repair costs for the U1243 code can vary depending on the specific issue, location, and labor rates, but it may range from $100 to $300 or more for parts and labor.

9. Will resetting the U1243 code make it go away permanently, or is it likely to return?

- Resetting the U1243 code may temporarily clear the fault, but if the underlying issue causing the code is not addressed, it is likely to return after some time or driving cycles.

10. Are there any recalls or technical service bulletins related to the U1243 code in Lincoln vehicles?

- It is recommended to check with a Lincoln dealership or online resources for any relevant recalls or technical service bulletins related to the U1243 code to see if there are specific remedies or known issues.