B3674 Code - Movable Roof Control Valve 1 Circuit
Quick Answer
The folding top uses electronically controlled valves to control the flow of hydraulic fluid. Common causes include Faulty Movable Roof Control Valve, Movable Roof Control Valve harness is open or shorted, Movable Roof Control Valve 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
- B3674 indicates Movable Roof Control Valve 1 Circuit.
- Common causes
- Common causes include Faulty Movable Roof Control Valve, Movable Roof Control Valve harness is open or shorted, Movable Roof Control Valve 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.
Code B3674 Description
What are the Possible Causes of the DTC B3674?
- Faulty Movable Roof Control Valve
- Movable Roof Control Valve harness is open or shorted
- Movable Roof Control Valve circuit poor electrical connection
- Faulty Folding Top Control (FTC) Module
How to Fix the DTC B3674?
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.
Code Tech Notes
B3674 02 Movable Roof Control Valve 1 Circuit short to ground
B3674 04 Movable Roof Control Valve 1 Circuit open circuit
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B3674 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 B3674 code?
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Need Help with the Code?
Get the B3674 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B3674 Chevrolet — Movable Roof Control Valve 1 Circuit
- B3674 Pontiac — Movable Roof Control Valve 1 Circuit
Frequently Asked Questions about B3674 Code
1. What are the common symptoms of OBDII code B3674?
- The common symptoms of code B3674 include issues with the operation of the movable roof, such as failure to open or close properly, erratic movement, or total malfunction.
2. What are the possible causes of OBDII code B3674?
- The possible causes of code B3674 can include a faulty movable roof control valve 1, damaged wiring or connectors related to the valve, or a malfunction in the control module.
3. How can I diagnose OBDII code B3674?
- Diagnosing code B3674 involves using a scan tool to retrieve the code, inspecting the movable roof control valve 1 and associated wiring for any visible damage, and conducting a thorough system test.
4. What are the recommended repair tips for OBDII code B3674?
- Repair tips for code B3674 may include replacing the faulty movable roof control valve 1, repairing or replacing damaged wiring or connectors, and resetting the control module after completing repairs.
5. Can OBDII code B3674 be cleared/reset without fixing the underlying issue?
- While you can clear/reset code B3674 using a scan tool, it is not recommended to do so without addressing the underlying issue, as the problem will likely persist and trigger the code again.
6. Is it safe to drive with OBDII code B3674 present?
- It is generally not recommended to drive with OBDII code B3674 present, as it can affect the operation of the movable roof and compromise vehicle safety and functionality.
7. How much does it typically cost to repair OBDII code B3674?
- The cost of repairing OBDII code B3674 can vary depending on the specific cause of the issue, but it may involve parts and labor costs ranging from $100 to $500 or more.
8. Can I repair OBDII code B3674 myself, or should I seek professional help?
- Repairing OBDII code B3674 may require specialized knowledge and tools, so it is advisable to seek professional help from a qualified mechanic or technician for an accurate diagnosis and proper repair.
9. Are there any preventive measures to avoid OBDII code B3674 in the future?
- To prevent OBDII code B3674 in the future, it is recommended to perform regular maintenance checks on the movable roof system, address any issues promptly, and follow the manufacturer's maintenance schedule.
10. How long does it take to repair OBDII code B3674?
- The time it takes to repair OBDII code B3674 can vary depending on the extent of the issue, availability of parts, and the skill level of the technician, but it may take a few hours to a full day to complete the repair.
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