B1405 2014 GMC Sierra Code - Control Module Voltage Reference Output 2 Circuit
Quick Answer
The B1405 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Control Module Voltage Reference Output 2 Circuit. Common causes include Faulty Control Module: A malfunctioning control module responsible for providing the voltage reference output can trigger the B1405 code, Wiring Issues: Damaged or corroded wiring connections related to the voltage reference circuit can disrupt the signal, Sensor Malfunction: A faulty sensor connected to the control module may cause inaccuracies in the voltage reference output. 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
- B1405 2014 GMC Sierra indicates Control Module Voltage Reference Output 2 Circuit.
- Common causes
- Common causes include Faulty Control Module: A malfunctioning control module responsible for providing the voltage reference output can trigger the B1405 code, Wiring Issues: Damaged or corroded wiring connections related to the voltage reference circuit can disrupt the signal, Sensor Malfunction: A faulty sensor connected to the control module may cause inaccuracies in the voltage reference output.
- 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 B1405 2014 GMC Sierra Description
The B1405 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Control Module Voltage Reference Output 2 Circuit. This code indicates a problem with the voltage reference output from a specific control module in the vehicle. The control module in question is responsible for regulating and providing a stable voltage reference to various components and sensors within the vehicle's electrical system.
Common Causes of B1405 2014 GMC Sierra
- Faulty Control Module: A malfunctioning control module responsible for providing the voltage reference output can trigger the B1405 code.
- Wiring Issues: Damaged or corroded wiring connections related to the voltage reference circuit can disrupt the signal.
- Sensor Malfunction: A faulty sensor connected to the control module may cause inaccuracies in the voltage reference output.
- Power Supply Problems: Issues with the vehicle's power supply, such as a weak battery or alternator, can impact the voltage reference circuit.
Symptoms of B1405 2014 GMC Sierra
- Check Engine Light: The most common symptom associated with the B1405 code is the illumination of the check engine light on the vehicle's dashboard.
- Erratic Engine Performance: The vehicle may experience rough idling, stalling, or hesitation during acceleration due to the inconsistent voltage reference.
- Electrical Issues: Various electrical components such as power windows, door locks, or lights may not function properly or exhibit intermittent failures.
- Transmission Problems: The transmission may shift harshly or erratically, affecting the vehicle's overall driving experience.
- Reduced Fuel Efficiency: The vehicle may experience a decrease in fuel efficiency due to the improper voltage regulation affecting engine performance.
How to Fix B1405 2014 GMC Sierra
- Diagnose the Issue: Use a diagnostic scanner to retrieve the specific DTC and pinpoint the source of the problem within the voltage reference circuit.
- Inspect Wiring and Connections: Thoroughly inspect the wiring harness and connectors associated with the control module to identify any damage or corrosion.
- Test Control Module: Test the control module to determine if it is functioning correctly or needs to be replaced.
- Replace Faulty Components: Replace any faulty sensors, wiring, or the control module itself as needed to restore proper voltage reference output.
- Clear DTCs and Test Drive: After completing the repairs, clear the DTCs from the vehicle's memory and test drive to ensure the issue has been resolved.
Cost to Fix B1405 2014 GMC Sierra
The cost of repairing the Control Module Voltage Reference Output 2 Circuit issue can vary depending on the specific cause of the problem and the parts needed for the repair. In general, the cost of parts for this repair can range from $100 to $300, while labor costs can range from $150 to $300. Overall, the total repair cost for addressing the B1405 code in a 2014 GMC Sierra may fall between $250 and $600. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, shop rates, and the extent of the repair needed. It's recommended to consult with a qualified mechanic or repair shop for a more accurate cost estimate.
Tech Notes for B1405 2014 GMC Sierra
B1405:03 Control Module Voltage Reference Output 2 Circuit Low Voltage
B1405:07 Control Module Voltage Reference Output 2 Circuit High Voltage
If the B1405 code is stored in the Seat Memory Control Module, check the Seat Motor and Seat Memory Control Module.
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Frequently Asked Questions about B1405 2014 GMC Sierra Code
1. What does the OBDII code B1405 mean on a 2014 GMC Sierra?
The code B1405 indicates an issue with the Control Module Voltage Reference Output 2 Circuit, which supplies voltage to certain vehicle sensors.
2. What are the common symptoms of code B1405 in a 2014 GMC Sierra?
Symptoms may include warning lights on the dashboard, erratic sensor readings, poor engine performance, or issues with systems relying on the voltage reference circuit.
3. What causes the B1405 code to appear?
Common causes include damaged wiring or connectors in the voltage reference circuit, a failed control module, or a short circuit.
4. How do I diagnose code B1405 on my 2014 GMC Sierra?
Start by inspecting the wiring and connectors for damage or corrosion, then check the voltage reference circuit for proper voltage using a multimeter.
5. Can I drive with the B1405 code on my 2014 GMC Sierra?
Driving may be possible, but it's not recommended as the fault can affect systems relying on the voltage reference, potentially leading to further issues.
6. How do I fix the B1405 code on a 2014 GMC Sierra?
Repairs may involve replacing damaged wiring, repairing or replacing connectors, or replacing the control module if it is faulty.
7. How much does it cost to fix the B1405 code on a 2014 GMC Sierra?
Costs vary depending on the repair, but wiring repairs may cost $50–$200, while a control module replacement could range from $300–$800.
8. Can a faulty sensor trigger the B1405 code on a 2014 GMC Sierra?
While the code specifically relates to the voltage reference circuit, a faulty sensor drawing excessive current could potentially contribute to the issue.
9. What tools are needed to troubleshoot the B1405 code?
Basic tools include a multimeter to measure voltage, a scan tool to read and clear codes, and wiring diagrams for the voltage reference circuit.
10. Will clearing the B1405 code solve the issue on my 2014 GMC Sierra?
Clearing the code may temporarily turn off the warning light, but the underlying problem must be fixed to prevent the code from returning.
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