AutoCodesGMC – B1405 2014 GMC Sierra

B1405 2014 GMC Sierra Code - Control Module Voltage Reference Output 2 Circuit

Quick Answer

The parking assist sensors are 3-wire ultrasonic sensors that are used to determine the distance between the vehicle and an object. Common causes include Faulty Parking Assist Sensors, Parking Assist Sensors harness is open or shorted, Parking Assist Sensors 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
B1405 2014 GMC Sierra indicates Control Module Voltage Reference Output 2 Circuit.
Common causes
Common causes include Faulty Parking Assist Sensors, Parking Assist Sensors harness is open or shorted, Parking Assist Sensors 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.
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Code Popularity 184
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 17, 2023
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Code B1405 2014 GMC Sierra Description

The parking assist sensors are 3-wire ultrasonic sensors that are used to determine the distance between the vehicle and an object. The Parking Assist Control Module supplies a reference voltage to the parking assist sensors via the Parking Assist Sensor Reference Voltage circuit and provides ground via the low reference circuit. The Parking Assist Control Module triggers the sensors in a sequential loop. After each sensor transmits, the 6 Parking Assist Control Module uses the sensor echo received through the signal circuit to calculate the distance and position of an object.
OBDII Code B1405 2014 GMC Sierra - Control Module Voltage Reference Output 2 Circuit - AutoCodes.com
B1405 2014 GMC Sierra Code - Control Module Voltage Reference Output 2 Circuit

What are the Possible Causes of the DTC B1405 2014 GMC Sierra?

  • Faulty Parking Assist Sensors
  • Parking Assist Sensors harness is open or shorted
  • Parking Assist Sensors circuit poor electrical connection
  • Faulty Parking Assist Control Module

How to Fix the DTC B1405 2014 GMC Sierra?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1405 2014 GMC Sierra 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 B1405 2014 GMC Sierra code?

Need more information on how to fix the B1405 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 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.

Discuss the causes and fixes for B1405 2014 GMC Sierra OBDII Code

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