AutoCodes – Generic – U1007

U1007 Code - Lost communication With Battery Monitoring Sensor 'A'

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Battery Monitoring Sensor 'A', Battery Monitoring Sensor 'A' harness is open or shorted, Battery Monitoring Sensor 'A' 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: U1007 indicates Lost communication With Battery Monitoring Sensor 'A'.
Common causes: Common causes include Faulty Battery Monitoring Sensor 'A', Battery Monitoring Sensor 'A' harness is open or shorted, Battery Monitoring Sensor 'A' 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 27,163

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 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1007 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 State of Health monitoring. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. When a module does not associate an identification number with at least one critical parameter within 5 seconds of beginning serial data communication, the Diagnostic Trouble Code (DTC) is set. When more than one critical parameter does not have an identification number associated with it, the DTC will only be reported once.

OBDII Code U1007 - Lost communication With Battery Monitoring Sensor 'A' - AutoCodes.com — U1007 Code - Lost communication With Battery Monitoring Sensor 'A'

What does this mean?

What are the Possible Causes of the DTC U1007?

Faulty Battery Monitoring Sensor 'A'
Battery Monitoring Sensor 'A' harness is open or shorted
Battery Monitoring Sensor 'A' circuit poor electrical connection

How to Fix the DTC U1007?

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 U1007 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.

Need more information about the U1007 code?

Need more information on how to fix the U1007 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1007 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U1007 Ford — Lost communication With Battery Monitoring Sensor 'A'
U1007 Lincoln — Lost communication With Battery Monitoring Sensor 'A'
U1007 Mercury — Lost communication With Battery Monitoring Sensor 'A'

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 U1007 Code

1. What are the common symptoms of OBDII code U1007?

- Common symptoms include issues with starting the vehicle, dimming or flickering lights, and sporadic electrical problems.

2. What are the possible causes of OBDII code U1007?

- The code may be triggered by a faulty battery monitoring sensor 'A', corroded or loose wiring connections, or a defective battery.

3. How can I diagnose the cause of OBDII code U1007?

- Diagnosing the code involves checking the battery monitoring sensor 'A' for proper functionality, inspecting wiring for damage, and testing the battery for voltage irregularities.

4. Can I drive my vehicle with OBDII code U1007?

- It is not recommended to drive the vehicle with this code as it can lead to potential electrical issues and cause the vehicle to shut down unexpectedly.

5. How can I repair OBDII code U1007?

- Repairing the code may involve replacing the battery monitoring sensor 'A', repairing or replacing damaged wiring, or installing a new battery if necessary.

6. Is it safe to clear the OBDII code U1007 without fixing the underlying issue?

- Clearing the code without addressing the root cause may temporarily resolve warning lights, but the underlying issue will persist and could lead to further problems.

7. Can a DIY enthusiast fix OBDII code U1007?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this code, but professional help is recommended for accurate diagnosis and proper repair.

8. How much does it cost to repair OBDII code U1007?

- The cost of repairing this code can vary depending on the specific issue, labor rates, and the cost of parts. It is recommended to obtain quotes from different repair shops for an accurate estimate.

9. Can extreme weather conditions trigger OBDII code U1007?

- Yes, extreme weather conditions such as extreme cold or heat can affect the battery monitoring sensor 'A' and potentially trigger the U1007 code.

10. How often should I check the battery monitoring sensor to prevent OBDII code U1007?

- It is recommended to include a check of the battery monitoring sensor 'A' during routine vehicle maintenance to prevent issues that may trigger the U1007 code.