AutoCodes – Lincoln – U1073 Lincoln

U1073 Lincoln Code - Invalid Or Missing Data For Engine Coolant

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Engine Coolant Sensor, Engine Coolant Sensor harness is open or shorted, Engine Coolant Sensor 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: U1073 Lincoln indicates Invalid Or Missing Data For Engine Coolant.
Common causes: Common causes include Faulty Engine Coolant Sensor, Engine Coolant Sensor harness is open or shorted, Engine Coolant Sensor 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 2,211

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 22, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code U1073 Lincoln Description

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for the state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an identification number is learned by a module, it will monitor for that module node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned identification number for 5 seconds, a Diagnostic Trouble Code (DTC) U1073 is set.

OBDII Code U1073 Lincoln - Invalid Or Missing Data For Engine Coolant - AutoCodes.com — U1073 Lincoln Code - Invalid Or Missing Data For Engine Coolant

What does this mean?

What are the Possible Causes of the DTC U1073 Lincoln?

Faulty Engine Coolant Sensor
Engine Coolant Sensor harness is open or shorted
Engine Coolant Sensor circuit poor electrical connection

How to Fix the DTC U1073 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 does this mean?

Code Tech Notes

This is typically an electrical wiring connection issue, either at the engine controller or at the sensors being monitored by the manufacturer.
It can occur if:
Someone changes a battery while the ignition switch is left on, that is, left in the RUN position.
Someone flashes/upgrades their engine controller - other modules unable to communicate with PCM during this process - this will set U1073 at a multitude of controllers on the vehicle - all false codes. Erase and carry on.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U1073 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 U1073 Lincoln Code

1. What are the common symptoms of OBDII code U1073 in a Lincoln indicating invalid or missing data for engine coolant?

- Common symptoms include engine overheating, erratic temperature gauge readings, reduced engine performance, and potential stalling.

2. What are some possible causes of OBDII code U1073 in a Lincoln related to engine coolant data issues?

- Causes may include a faulty engine coolant temperature sensor, damaged wiring or connectors in the coolant sensor circuit, low coolant levels, or a malfunctioning engine control module (ECM).

3. How can I diagnose the OBDII code U1073 in my Lincoln if I suspect an issue with engine coolant data?

- Diagnosis typically involves checking the coolant level, inspecting the coolant temperature sensor and its connections, and using a diagnostic scanner to read live data and confirm the issue.

4. What are the repair options for resolving OBDII code U1073 in a Lincoln indicating invalid or missing engine coolant data?

- Repair options may include replacing the engine coolant temperature sensor, repairing damaged wiring or connectors, topping up coolant levels, or reprogramming the ECM if necessary.

5. Can driving with OBDII code U1073 in a Lincoln lead to further damage to the vehicle?

- Continuing to drive with this code present can potentially cause engine overheating, reduced fuel efficiency, and damage to engine components, so it is recommended to address the issue promptly.

6. How long does it typically take to repair OBDII code U1073 in a Lincoln related to engine coolant issues?

- The repair time can vary depending on the exact cause of the problem, but in most cases, it can be resolved within a few hours by a qualified mechanic.

7. Is it safe to clear the OBDII code U1073 in a Lincoln without addressing the underlying coolant data issue?

- Clearing the code without fixing the underlying problem may temporarily turn off the check engine light, but it will not resolve the issue causing the code to trigger in the first place.

8. Are there any preventive maintenance tips to avoid encountering OBDII code U1073 in a Lincoln?

- Regularly checking coolant levels, monitoring engine temperature, and addressing any cooling system issues promptly can help prevent issues leading to this code.

9. Can a DIY enthusiast with basic automotive repair skills fix OBDII code U1073 in a Lincoln themselves?

- While some aspects of diagnosing and repairing this code may be within reach for DIY enthusiasts, it is recommended to consult a professional mechanic for accurate diagnosis and repair to ensure the issue is properly resolved.

10. How much can I expect to pay for repairing OBDII code U1073 in a Lincoln related to engine coolant data issues?

- The cost of repair can vary based on the specific cause of the problem, but it may range from $100 to $300 for parts and labor, excluding any additional diagnostic fees.