OBD Guide

B3008

Hood Ajar Circuit Low

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$11–56 (est.)

Symptoms

  • Bonnet warning on the dashboard
  • Speed limit (if provided by the system)
  • Incorrect operation of the immobilizer (in some models)

Causes

  • Open or short circuit in the sensor wiring harness
  • Oxidation of hood sensor contacts
  • Malfunction of the hood position sensor
  • Control unit malfunction

How to Fix

  1. Check the mechanical condition of the hood (if it closes correctly)
  2. Inspect the hood position sensor and its contacts
  3. Check the integrity of the wiring from the sensor to the control unit
  4. Measure the resistance of the sensor in the open/closed position
  5. If necessary, replace the sensor or repair the wiring

Related codes

Error B3008 by Vehicle Brand