my Skoda Octavia NFL (2020-Present) has a check engine light on, what could it be?

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, multimeter, vacuum gauge.
• Ensure the vehicle is on a level surface and the engine is cool.
• Disconnect the battery to avoid electrical issues.

2. Addressing Error Codes

• Connect the OBD-II scanner to the vehicle’s diagnostic port.
• Retrieve and note down the error codes for further analysis.
• Clear the codes and perform a test drive to see if the check engine light returns.

3. Inspect and Replace Components

A. Air Filter Replacement

• Remove the air filter housing cover using a socket set.
• Take out the old air filter and inspect it for dirt.
• Install a new air filter ensuring it fits snugly.

B. MAF Sensor Cleaning/Replacement

• Locate the MAF sensor (usually between the air filter and throttle body).
• Disconnect the electrical connector and unscrew the sensor.
• Clean the sensor with MAF cleaner or replace it if faulty.

C. Vacuum Hose Inspection

• Visually inspect all vacuum hoses connected to the intake manifold for cracks or disconnections.
• Replace any damaged hoses with OEM parts.

4. Fuel System Check

• Remove the fuel pump relay and check the fuel pressure using a fuel pressure gauge.
• If pressure is low, inspect the fuel pump and replace if necessary.