Engine-Codes.com
Engine-Codes – Chevrolet – U1301 Chevrolet

U1301 Chevrolet Code - High Voltage On Class 2 Serial Data Circuit

Quick Answer

The U1301 code for Chevrolet vehicles indicates that there is high voltage detected on the Class 2 serial data circuit. Common causes include Faulty wiring or connections in the Class 2 serial data circuit, Corrosion or damage to the data wires, Short circuit in the circuit. 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
U1301 Chevrolet indicates High Voltage On Class 2 Serial Data Circuit.
Common causes
Common causes include Faulty wiring or connections in the Class 2 serial data circuit, Corrosion or damage to the data wires, Short circuit in the circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 18, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code U1301 Chevrolet Description

The U1301 code for Chevrolet vehicles indicates that there is high voltage detected on the Class 2 serial data circuit. The Class 2 serial data circuit is a communication network that allows various modules and control units in the vehicle to communicate with each other. When there is high voltage on this circuit, it can disrupt the normal communication between these modules and lead to various issues with the vehicle's systems.

OBDII Code U1301 Chevrolet - High Voltage On Class 2 Serial Data Circuit
U1301 Chevrolet Code - High Voltage On Class 2 Serial Data Circuit

Common Causes of U1301 Chevrolet

  1. Faulty wiring or connections in the Class 2 serial data circuit
  2. Corrosion or damage to the data wires
  3. Short circuit in the circuit
  4. Faulty control module causing high voltage output
  5. Software glitches or updates needed for control modules

Symptoms of U1301 Chevrolet

  1. Dashboard warning lights (such as check engine light or ABS light) illuminated
  2. Erratic behavior of electronic components (such as power windows or door locks)
  3. Engine misfires or stalling
  4. Issues with transmission shifting
  5. Loss of communication with certain control modules

How to Fix U1301 Chevrolet

  1. Perform a thorough inspection of the Class 2 serial data circuit wiring and connections
  2. Check for any corrosion or damage to the data wires and repair as necessary
  3. Test the control modules for any faults or high voltage output
  4. Update software for control modules if needed
  5. Clear the code and test drive the vehicle to ensure the issue has been resolved

Cost to Fix U1301 Chevrolet

The typical repair costs for addressing a U1301 code can vary depending on the specific cause of the issue. In general, the repair costs can range from $100 to $500, including parts and labor. However, it is essential to consider that diagnosis time and labor rates at auto repair shops can vary based on the factors mentioned earlier. It is advisable to consult with a professional technician to get an accurate estimate for the repair.

What does this mean?

Tech Notes for U1301 Chevrolet

In most cases, the U1301 code is combined with other codes, fix other codes first.

Need more information about the U1301 Chevrolet code?

Need more information on how to fix the U1301 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1301 Chevrolet 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 U1301 Chevrolet Code

1. What are the common symptoms of OBDII code U1301 in a Chevrolet?

The common symptoms include issues with the vehicle's communication system, such as loss of communication with various control modules, erratic behavior of gauges and lights, and difficulty accessing certain vehicle functions.

2. What can cause the OBDII code U1301 in a Chevrolet?

The U1301 code in a Chevrolet is typically caused by high voltage on the Class 2 serial data circuit, which can be a result of damaged wiring, faulty connectors, or a malfunctioning control module.

3. How can I diagnose the OBDII code U1301 in my Chevrolet?

Diagnosing the U1301 code involves using a diagnostic scanner to retrieve the code and then performing a thorough inspection of the Class 2 serial data circuit, checking for damaged wiring, loose connections, or faulty control modules.

4. Can a DIYer repair the OBDII code U1301 in a Chevrolet?

While diagnosing the U1301 code may be possible for a DIYer with some automotive knowledge and the right tools, repairing the issue may require professional expertise to accurately identify and fix the root cause.

5. Are there any quick fixes for the OBDII code U1301 in a Chevrolet?

Quick fixes for the U1301 code are generally not recommended, as addressing the underlying high voltage issue on the Class 2 serial data circuit is crucial to prevent further damage to the vehicle's communication system.

6. How much does it cost to repair the OBDII code U1301 in a Chevrolet?

The cost of repairing the U1301 code in a Chevrolet can vary depending on the extent of the damage, the parts needed for replacement, and labor costs. It is advisable to consult a professional mechanic for an accurate estimate.

7. Can driving with the OBDII code U1301 in a Chevrolet cause further damage?

Continuing to drive with the U1301 code present in a Chevrolet can potentially cause further damage to the vehicle's communication system, leading to more complex and expensive repairs in the future.

8. Will resetting the OBDII code U1301 in a Chevrolet make it go away permanently?

Simply resetting the U1301 code in a Chevrolet without addressing the underlying high voltage issue on the Class 2 serial data circuit will not make it go away permanently, as the problem will likely resurface.

9. How long does it typically take to repair the OBDII code U1301 in a Chevrolet?

The repair time for the U1301 code in a Chevrolet can vary depending on the complexity of the issue and the availability of parts. It is best to consult with a professional mechanic for a more accurate timeline.

10. Is the OBDII code U1301 in a Chevrolet a common issue?

The U1301 code related to high voltage on the Class 2 serial data circuit is a relatively common issue in Chevrolet vehicles, particularly in older models or those with high mileage. Regular maintenance and inspections can help prevent this code from occurring.

Discuss the causes and fixes for U1301 Chevrolet OBDII Code

Submit a New Comment

Code U1301 Chevrolet comments

No comments found for this page.