AutoCodes – Generic – B1405

B1405 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 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 22,226

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 17, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1405 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 - Control Module Voltage Reference Output 2 Circuit - AutoCodes.com — B1405 Code - Control Module Voltage Reference Output 2 Circuit

What does this mean?

What are the Possible Causes of the DTC B1405?

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?

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.

What does this mean?

Code Tech Notes

B1405:02 Control Module Voltage Reference Output 2 Circuit Short to Ground
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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1405 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 code?

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

Need Help with the Code?

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

Information for Specific Makes

B1405 Buick — Control Module Voltage Reference Output 2 Circuit
B1405 Cadillac — Control Module Voltage Reference Output 2 Circuit
B1405 Chevrolet — Control Module Voltage Reference Output 2 Circuit
B1405 Ford — Driver Side Curtain Deployment Control 1 Circuit
B1405 GMC — Control Module Voltage Reference Output 2 Circuit
B1405 Lincoln — Driver Side Curtain Deployment Control 1 Circuit
B1405 Mercury — Driver Side Curtain Deployment Control 1 Circuit

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 Code

1. What are common symptoms of OBDII code B1405?

- Common symptoms include illuminated Check Engine Light, issues with vehicle starting, rough idling, and poor engine performance.

2. What does OBDII code B1405 indicate?

- OBDII code B1405 indicates a fault in the Control Module Voltage Reference Output 2 Circuit.

3. What are some possible causes of OBDII code B1405?

- Possible causes include a faulty control module, damaged wiring or connectors, low battery voltage, or a malfunctioning voltage regulator.

4. How can I diagnose OBDII code B1405?

- Diagnosing OBDII code B1405 typically involves using a scan tool to retrieve the code, checking the voltage output of the control module, inspecting wiring and connectors for damage, and testing the voltage regulator.

5. How is OBDII code B1405 typically repaired?

- Repairing OBDII code B1405 may involve replacing a faulty control module, repairing damaged wiring or connectors, ensuring proper battery voltage, or replacing a malfunctioning voltage regulator.

6. Can I drive my vehicle with OBDII code B1405?

- It is not recommended to drive your vehicle with OBDII code B1405 as it can lead to further damage and potentially unsafe driving conditions.

7. How urgent is it to address OBDII code B1405?

- While the severity of the issue may vary, it is generally recommended to address OBDII code B1405 promptly to prevent further issues with your vehicle's performance.

8. Is it possible to clear OBDII code B1405 without repairing the issue?

- Clearing the code without addressing the underlying issue may temporarily turn off the Check Engine Light, but the problem will likely reoccur until properly repaired.

9. Can a DIY enthusiast fix OBDII code B1405?

- Depending on your level of experience and access to tools, a DIY enthusiast may be able to address OBDII code B1405 by following diagnostic steps and repair procedures outlined in the vehicle's service manual.

10. How can I prevent OBDII code B1405 from occurring in the future?

- Regular maintenance, checking and maintaining proper battery voltage, and promptly addressing any issues related to the control module and wiring can help prevent OBDII code B1405 from occurring in the future.