B3794:08 Code - Cruise Control Function Request Circuit
Quick Answer
The B3794:08 diagnostic trouble code (DTC) indicates an issue with the cruise control function request circuit within a vehicle's electronic control system. Common causes include Faulty cruise control switch or buttons that do not send the correct signals, Damaged or corroded wiring in the cruise control circuit, Malfunctioning cruise control module or ECU. 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
- B3794:08 indicates Cruise Control Function Request Circuit.
- Common causes
- Common causes include Faulty cruise control switch or buttons that do not send the correct signals, Damaged or corroded wiring in the cruise control circuit, Malfunctioning cruise control module or ECU.
- 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 B3794:08 Description
The B3794:08 diagnostic trouble code (DTC) indicates an issue with the cruise control function request circuit within a vehicle's electronic control system. This code typically arises when the cruise control system fails to receive a proper signal from the control switch or when there is a malfunction in the communication between the cruise control module and the engine control unit (ECU). The cruise control system is designed to maintain a vehicle's speed without the driver needing to keep their foot on the accelerator, enhancing comfort and fuel efficiency during long drives.
Common Causes of B3794:08
- Faulty cruise control switch or buttons that do not send the correct signals.
- Damaged or corroded wiring in the cruise control circuit.
- Malfunctioning cruise control module or ECU.
- Issues with the brake pedal switch, which may not signal the system to disengage.
- Software glitches or updates needed in the vehicle's ECU.
Symptoms of B3794:08
- Cruise control system fails to engage or disengage.
- Erratic acceleration or deceleration when cruise control is activated.
- Warning lights on the dashboard, such as the cruise control indicator or check engine light.
- Inconsistent speed maintenance while cruise control is active.
- Difficulty in controlling vehicle speed manually, as the throttle may not respond as expected.
How to Fix B3794:08
- Diagnostic Testing: Begin with a thorough diagnostic scan to confirm the B3794:08 code and check for any additional codes that may provide further insight into the issue.
- Visual Inspection: Inspect the cruise control switch, wiring, and connectors for any visible signs of damage, corrosion, or loose connections.
- Testing Components: Test the cruise control switch and brake pedal switch for proper functionality. Replace any faulty components as necessary.
- Repair Wiring: If damaged wiring is found, repair or replace the affected sections to ensure proper electrical connectivity.
- Reprogramming or Updating ECU: If software issues are suspected, reprogram or update the ECU to ensure it communicates correctly with the cruise control system.
Cost to Fix B3794:08
The cost to diagnose and repair the B3794:08 code can vary significantly based on the specific issue and the vehicle's make and model. On average, diagnostic fees can range from $80 to $150 per hour, with total repair costs typically falling between $200 and $600. This estimate includes parts and labor, but it is essential to note that labor rates can differ based on location, with metropolitan areas and dealerships often charging more than independent shops. For a more precise estimate, it is advisable to consult local repair shops to understand their specific rates and the expected time for diagnosis and repairs.
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Code B3794:08 Information for Specific Makes
- B3794:08 Chevrolet — Cruise Control Function Request Circuit
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