AutoCodes – GMC – B1405 GMC

B1405 GMC 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 GMC 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 1,305
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 GMC 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 GMC - Control Module Voltage Reference Output 2 Circuit - AutoCodes.com
B1405 GMC Code - Control Module Voltage Reference Output 2 Circuit

What are the Possible Causes of the DTC B1405 GMC?

  • 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 GMC?

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 GMC 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 GMC code?

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

Need Help with the Code?

Get the B1405 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC 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 B1405 GMC Code

1. What are the common symptoms of OBDII code B1405 GMC?

- Common symptoms include issues with engine performance, illuminated warning lights on the dashboard, and potential electrical problems in the vehicle.

2. What causes the OBDII code B1405 GMC to trigger?

- This code is typically triggered by a fault in the Control Module Voltage Reference Output 2 circuit, which may be caused by damaged wiring, a faulty control module, or poor electrical connections.

3. How can I diagnose the OBDII code B1405 GMC?

- Diagnosis usually involves using a diagnostic scanner to read the code, checking the wiring and connections related to the Control Module Voltage Reference Output 2 circuit, and performing voltage tests to pinpoint the issue.

4. Can I drive my vehicle with the OBDII code B1405 GMC present?

- It is generally not recommended to drive with this code present, as it can lead to further electrical problems or affect the overall performance of the vehicle.

5. What is the repair process for OBDII code B1405 GMC?

- The repair process often involves repairing or replacing any damaged wiring, ensuring proper connections, and potentially replacing the control module if deemed necessary.

6. Are there any DIY tips for fixing the OBDII code B1405 GMC?

- DIY tips may include checking and cleaning electrical connections, inspecting wiring for damage, and consulting the vehicle's repair manual for specific troubleshooting steps.

7. Is it necessary to reset the OBDII code B1405 GMC after repairs?

- Yes, it is recommended to clear the code using a diagnostic scanner after repairs have been made to ensure the issue has been resolved and to turn off the check engine light.

8. Can weather conditions affect the appearance of OBDII code B1405 GMC?

- Extreme weather conditions or moisture can potentially impact the electrical components related to this code, leading to intermittent issues or false triggers.

9. Is OBDII code B1405 GMC specific to certain GMC models?

- While this code is associated with GMC vehicles, it can be found in various models that utilize OBDII systems for onboard diagnostics.

10. What is the importance of addressing OBDII code B1405 GMC promptly?

- Addressing this code promptly is crucial to prevent further electrical damage, ensure proper vehicle performance, and maintain the overall safety and reliability of the vehicle.

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