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Engine-Codes – Chevrolet – B3794 Chevrolet

B3794 Chevrolet Code - Cruise Control Function Request Circuit

Quick Answer

The B3794 diagnostic trouble code (DTC) for Chevrolet vehicles relates to the Cruise Control Function Request Circuit. Common causes include Faulty cruise control switch, Damaged cruise control function request circuit wiring, Defective cruise control module. 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
B3794 Chevrolet indicates Cruise Control Function Request Circuit.
Common causes
Common causes include Faulty cruise control switch, Damaged cruise control function request circuit wiring, Defective cruise control module.
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 Sep 13, 2024
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Code B3794 Chevrolet Description

The B3794 diagnostic trouble code (DTC) for Chevrolet vehicles relates to the Cruise Control Function Request Circuit. This code indicates that there is a malfunction in the circuit responsible for sending signals to the cruise control system, which allows the driver to set and maintain a desired speed without using the accelerator pedal. When this code is triggered, it means that the vehicle's onboard computer has detected an issue with the cruise control system, potentially leading to its failure to engage or function properly.

OBDII Code B3794 Chevrolet - Cruise Control Function Request Circuit
B3794 Chevrolet Code - Cruise Control Function Request Circuit

Common Causes of B3794 Chevrolet

  1. Faulty cruise control switch
  2. Damaged cruise control function request circuit wiring
  3. Defective cruise control module
  4. ECM communication issues
  5. Poor electrical connections or grounds

Symptoms of B3794 Chevrolet

  1. Inoperative cruise control system
  2. Cruise control system engages but does not maintain speed
  3. Illumination of the cruise control warning light on the dashboard
  4. Erratic behavior of the cruise control system
  5. Possible stored trouble codes related to the cruise control system

How to Fix B3794 Chevrolet

  1. Begin by conducting a thorough visual inspection of the cruise control system components, including the switch, wiring, and module.
  2. Use a multimeter to test the continuity and voltage of the cruise control function request circuit to identify any faults.
  3. Inspect and repair any damaged wiring or connectors in the cruise control system.
  4. If necessary, replace the cruise control switch, module, or ECM to address the underlying issue.
  5. Clear the DTC from the vehicle's memory using a diagnostic scan tool and test the cruise control system to ensure proper functionality.

Cost to Fix B3794 Chevrolet

The cost of repairing a B3794 DTC related to the cruise control function request circuit can vary depending on the specific cause of the issue and the labor rates in your area. Typically, parts for this repair may range from $50 to $200, while labor costs can add an additional $100 to $300. Overall, the total repair cost could fall between $150 and $500. It's important to note that these estimates are general and may differ based on the vehicle's make and model, as well as the rates charged by individual auto repair shops. Be sure to consult with a professional technician for a more accurate cost assessment.

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Information for Specific Chevrolet Models

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 B3794 Chevrolet Code

What does the OBDII code B3794 mean on a Chevrolet?

1. The B3794 code indicates a fault in the Cruise Control Function Request Circuit, which relates to the communication between the cruise control switch and the vehicle's control module. 2.

What are the common symptoms of code B3794 in a Chevrolet?

Common symptoms include the cruise control not engaging, cruise control turning off unexpectedly, or the cruise control indicator light not functioning properly. 3.

What causes the B3794 code to appear on a Chevrolet?

The code can be triggered by a faulty cruise control switch, damaged wiring or connectors in the circuit, or a malfunctioning body control module (BCM). 4.

Can I still drive my Chevrolet with the B3794 code?

Yes, you can typically drive with this code, but the cruise control system may not work until the issue is resolved. 5.

How do I diagnose the B3794 code on my Chevrolet?

Start by inspecting the cruise control switch for damage or wear, checking the wiring and connectors in the circuit for continuity, and using a scan tool to monitor the cruise control signal. 6.

What tools are needed to fix the B3794 code on a Chevrolet?

You may need a digital multimeter, a scan tool with live data capabilities, and basic hand tools for inspecting and repairing wiring or replacing components. 7.

How can I fix the B3794 code on my Chevrolet?

Repairs may include replacing the cruise control switch, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the body control module if necessary. 8.

Is the B3794 code common in Chevrolet vehicles?

While not extremely common, it can occur in Chevrolet models with faulty cruise control systems, especially in older vehicles or those with high mileage. 9.

How much does it cost to fix the B3794 code on a Chevrolet?

Repair costs can vary depending on the issue, ranging from $50 to $300 for a cruise control switch replacement or wiring repairs, and up to $500+ if the BCM needs replacement or reprogramming. 10.

Can a faulty cruise control switch alone cause the B3794 code?

Yes, a faulty cruise control switch is a common cause of the B3794 code, as it can prevent proper communication with the BCM.

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