AutoCodes – Generic – B3006:02

B3006:02 Code - Hood Ajar Switch Circuit Short to Ground

Quick Answer

The Body Control Module (BCM) applies B+ to the hood ajar signal circuit and monitors the voltage to determine the position of the hood. Common causes include Faulty Hood Ajar Switch / Hood Latch, Hood Ajar Switch harness is open or shorted, Hood Ajar 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: B3006:02 indicates Hood Ajar Switch Circuit Short to Ground.
Common causes: Common causes include Faulty Hood Ajar Switch / Hood Latch, Hood Ajar Switch harness is open or shorted, Hood Ajar 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 2,225

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 Jun 02, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code B3006:02 Description

The Body Control Module (BCM) applies B+ to the hood ajar signal circuit and monitors the voltage to determine the position of the hood. When the hood is closed, the switch is open, and the voltage remains high. When the hood is open, the switch is closed, and the voltage is pulled low. The Diagnostic Trouble Code (DTC) will be set when the BCM detects that the hood ajar switch signal circuit is shorted to ground.

OBDII Code B3006:02 - Hood Ajar Switch Circuit Short to Ground - AutoCodes.com — B3006:02 Code - Hood Ajar Switch Circuit Short to Ground

What does this mean?

What are the Possible Causes of the DTC B3006:02?

Faulty Hood Ajar Switch / Hood Latch
Hood Ajar Switch harness is open or shorted
Hood Ajar Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3006:02?

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 B3006:02 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.