AutoCodes – Generic – U1515

U1515 Code - Body Control Module Lost Communication With Left Windshield Wiper Motor/Windshield Wiper Motor Module On LIN Bus

Quick Answer

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. Common causes include Faulty Left Windshield Wiper Motor/Windshield Wiper Motor Module, Left Windshield Wiper Motor/Windshield Wiper Motor Module harness is open or shorted, Left Windshield Wiper Motor/Windshield Wiper Motor 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: U1515 indicates Body Control Module Lost Communication With Left Windshield Wiper Motor/Windshield Wiper Motor Module On LIN Bus.
Common causes: Common causes include Faulty Left Windshield Wiper Motor/Windshield Wiper Motor Module, Left Windshield Wiper Motor/Windshield Wiper Motor Module harness is open or shorted, Left Windshield Wiper Motor/Windshield Wiper Motor 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 3,554

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 Jun 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1515 Description

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. The serial data is transmitted over a LIN circuit between a master control module and other LIN devices within a particular subsystem. If serial data communication is lost between any of the LIN devices on the LIN bus network, the master control module will set a no communication code against the non-communicating LIN device. The Diagnostic Trouble Code (DTC) will set when a supervised periodic message to the Body Control Module (BCM) from Left Windshield Wiper Motor/Windshield Wiper Motor Module has not been received.

OBDII Code U1515 - Body Control Module Lost Communication With Left Windshield Wiper Motor/Windshield Wiper Motor Module On LIN Bus - AutoCodes.com — U1515 Code - Body Control Module Lost Communication With Left Windshield Wiper Motor/Windshield Wiper Motor Module On LIN Bus

What does this mean?

What are the Possible Causes of the DTC U1515?

Faulty Left Windshield Wiper Motor/Windshield Wiper Motor Module
Left Windshield Wiper Motor/Windshield Wiper Motor Module harness is open or shorted
Left Windshield Wiper Motor/Windshield Wiper Motor Module circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC U1515?

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 U1515 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 U1515 code?

Need more information on how to fix the U1515 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1515 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U1515 Buick — Body Control Module Lost Communication With Left Windshield Wiper Motor/Windshield Wiper Motor Module On LIN Bus
U1515 Cadillac — Body Control Module Lost Communication With Left Windshield Wiper Motor/Windshield Wiper Motor Module On LIN Bus
U1515 Chevrolet — Body Control Module Lost Communication With Left Windshield Wiper Motor/Windshield Wiper Motor Module On LIN Bus
U1515 GMC — Body Control Module Lost Communication With Left Windshield Wiper Motor/Windshield Wiper Motor Module On LIN Bus

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 U1515 Code

1. What are the common symptoms of OBDII code U1515?

- Common symptoms include the left windshield wiper not functioning properly or at all, irregular wiper operation, and a warning light on the dashboard.

2. What causes the OBDII code U1515 to be triggered?

- This code is usually triggered when the body control module loses communication with the left windshield wiper motor or the windshield wiper motor module on the LIN bus.

3. How can I diagnose the issue related to OBDII code U1515?

- Diagnosing the issue involves checking the wiring connections between the body control module, left windshield wiper motor, and windshield wiper motor module. Using a diagnostic scanner to read the code and check for any other related fault codes is also recommended.

4. What are some possible repair tips for resolving OBDII code U1515?

- Repair tips may involve inspecting and repairing any damaged wiring or loose connections between the involved components. Resetting the fault codes after the repair is also important to see if the issue persists.

5. Can a DIY enthusiast fix OBDII code U1515 on their own?

- While basic troubleshooting like checking connections can be done by a DIY enthusiast, more complex diagnostics and repairs involving the LIN bus system may require professional assistance.

6. Is it safe to continue driving with OBDII code U1515 present?

- It is generally not recommended to drive with this code present, as it may affect the proper functioning of the windshield wiper system, compromising visibility in adverse weather conditions.

7. How can I prevent OBDII code U1515 from recurring?

- Regularly inspecting the wiring connections, keeping the windshield wiper system well-maintained, and addressing any issues promptly can help prevent this code from recurring.

8. Are there any recalls or service bulletins related to OBDII code U1515?

- It's advisable to check with the vehicle manufacturer or authorized dealerships for any recalls or service bulletins related to this specific OBDII code to stay informed about potential fixes or updates.

9. Does OBDII code U1515 affect other vehicle systems?

- While this code specifically relates to the communication issue between the body control module and the left windshield wiper system, it may indirectly impact other vehicle systems that rely on accurate sensor data for operation.

10. How much can I expect to pay to repair OBDII code U1515 at a repair shop?

- Repair costs can vary depending on the extent of the issue and labor rates in your area. It's advisable to get quotes from reputable repair shops to determine the approximate cost of resolving this OBDII code.