AutoCodes – Buick – B1474 Buick

B1474 Buick Code - Right Front/Passenger Exterior Door Handle Switch Circuit

Quick Answer

The left front interior door handle, left front exterior door handle, right front interior door handle and right front exterior door handle switch signal circuits provide inputs to the Driver Door Module (DDM) or Passenger Door Module (PDM) when an interior or exterior door handle switch is activated. Common causes include Faulty Right Front/Passenger Exterior Door Handle Switch, Right Front/Passenger Exterior Door Handle Switch harness is open or shorted, Right Front/Passenger Exterior Door Handle Switch 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: B1474 Buick indicates Right Front/Passenger Exterior Door Handle Switch Circuit.
Common causes: Common causes include Faulty Right Front/Passenger Exterior Door Handle Switch, Right Front/Passenger Exterior Door Handle Switch harness is open or shorted, Right Front/Passenger Exterior Door Handle Switch 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 520

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 Mar 18, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1474 Buick Description

The left front interior door handle, left front exterior door handle, right front interior door handle and right front exterior door handle switch signal circuits provide inputs to the Driver Door Module (DDM) or Passenger Door Module (PDM) when an interior or exterior door handle switch is activated. These inputs allow the door module to detect a door open request. The door modules provide voltage to the door handle switches. If the door module detects that a ground is applied for greater than 180 seconds, a DTC is set and the door module will ignore the door handle switch input. The Diagnostic Trouble Code (DTC) sets when the DDM or PDM detects a short to ground on an interior or exterior door handle switch signal circuit.

OBDII Code B1474 Buick - Right Front/Passenger Exterior Door Handle Switch Circuit - AutoCodes.com — B1474 Buick Code - Right Front/Passenger Exterior Door Handle Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B1474 Buick?

Faulty Right Front/Passenger Exterior Door Handle Switch
Right Front/Passenger Exterior Door Handle Switch harness is open or shorted
Right Front/Passenger Exterior Door Handle Switch circuit poor electrical connection
Faulty Passenger Door Module (PDM)

How to Fix the DTC B1474 Buick?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1474 Buick 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.

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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 B1474 Buick Code

1. What are the common symptoms of OBDII code B1474 for a Buick related to the Right Front/Passenger Exterior Door Handle Switch Circuit?

The common symptoms include non-functioning or intermittent operation of the right front passenger exterior door handle switch.

2. What are the possible causes of OBDII code B1474 in a Buick?

The code B1474 in a Buick could be caused by a faulty exterior door handle switch, damaged wiring, or a problem with the control module.

3. How can I diagnose the OBDII code B1474 in my Buick related to the Right Front/Passenger Exterior Door Handle Switch Circuit?

You can diagnose the code by inspecting the exterior door handle switch, checking the wiring for any damage, and using a scan tool to read the fault codes.

4. Can I repair OBDII code B1474 in my Buick at home?

Repairing the OBDII code B1474 in your Buick may require basic electrical skills. You can start by checking and potentially replacing the exterior door handle switch or repairing any damaged wiring.

5. Is it safe to drive my Buick with the OBDII code B1474 related to the Right Front/Passenger Exterior Door Handle Switch Circuit?

It is generally safe to drive your Buick with this code, but you may experience inconvenience due to the non-functioning door handle switch.

6. Do I need to replace the entire exterior door handle assembly if I have OBDII code B1474 in my Buick?

In some cases, you may only need to replace the exterior door handle switch itself rather than the entire assembly. It's best to diagnose the issue first before determining the necessary repair.

7. Can extreme weather conditions cause OBDII code B1474 in a Buick?

Extreme weather conditions can potentially affect the operation of the exterior door handle switch, leading to the triggering of the B1474 code.

8. How long does it typically take to repair OBDII code B1474 in a Buick?

The repair time for the B1474 code can vary depending on the exact cause of the issue and your level of experience. It may take anywhere from 30 minutes to a few hours.

9. Will resetting the OBDII codes make the B1474 code related to the Right Front/Passenger Exterior Door Handle Switch Circuit go away?

Resetting the OBDII codes may temporarily clear the B1474 code, but if the underlying issue with the exterior door handle switch circuit is not fixed, the code is likely to return.

10. Can a mechanic help me diagnose and repair OBDII code B1474 in my Buick?

Yes, a qualified mechanic can assist you in diagnosing and repairing the B1474 code related to the Right Front/Passenger Exterior Door Handle Switch Circuit in your Buick.