U043F

Invalid Data Received From Vacuum Sensor B

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Deterioration of vehicle dynamics
Increased fuel consumption
Unstable engine operation at idle
Possible problems with the operation of the brake system

Causes

Vacuum sensor B fault
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Software error in the control unit
Mechanical damage to the sensor or its wiring

How to Fix

Check the integrity of the wiring to the sensor
Check connections and contacts in the sensor connector
Test vacuum sensor B using diagnostic equipment
Replace sensor if necessary
Update control unit software (if required)

Related codes

U043E U0440 U0441