AutoCodes – GMC – B1474 GMC

B1474 GMC 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 GMC 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 690

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

What does this mean?

What are the Possible Causes of the DTC B1474 GMC?

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 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1474 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.

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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 GMC Code

1. What are common symptoms associated with OBDII code B1474 GMC?

- Common symptoms include the right front/passenger exterior door handle switch not working, the door not unlocking or locking properly, and interior lights not turning on when the door is opened.

2. What are the possible causes of OBDII code B1474 GMC?

- Possible causes include a faulty right front/passenger exterior door handle switch, damaged wiring or connectors in the circuit, or a malfunctioning body control module.

3. How can I diagnose the issue related to OBDII code B1474 GMC?

- You can diagnose the issue by inspecting the right front/passenger exterior door handle switch for any visible damage, checking the wiring and connectors for loose connections or corrosion, and using a diagnostic tool to scan for specific error codes.

4. Can OBDII code B1474 GMC be fixed without professional help?

- Depending on the underlying cause, you may be able to fix the issue yourself by replacing the faulty door handle switch, repairing damaged wiring or connectors, or resetting the body control module. However, professional help may be required for more complex issues.

5. Are there any temporary solutions for OBDII code B1474 GMC?

- While temporary solutions are not recommended, you can try manually unlocking and locking the door from the inside or using the key fob to operate the door until the issue is properly diagnosed and repaired.

6. Is it safe to continue driving with OBDII code B1474 GMC unresolved?

- It is not recommended to drive with unresolved OBDII code B1474 GMC, as it may affect the functionality of the right front/passenger door and compromise the safety and security of the vehicle.

7. How much does it typically cost to repair OBDII code B1474 GMC?

- The cost of repairing OBDII code B1474 GMC can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose to repair it yourself or seek professional help. Costs may range from a few dollars for simple fixes to a few hundred dollars for more complex repairs.

8. Can I prevent OBDII code B1474 GMC from occurring in the future?

- To prevent OBDII code B1474 GMC from occurring in the future, you can perform regular maintenance checks on your vehicle's door handle switches, wiring, and connectors, and address any issues promptly to avoid more serious problems down the line.