my Volkswagen Golf's check engine light is on after oil change what should I do

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent any electrical issues while working.

2. Inspect Oil Level and Quality

• Remove the dipstick and wipe it clean.
• Reinsert the dipstick and remove it again to check the oil level.
• If oil is low, add the correct type of oil as specified in the owner’s manual.
• If oil appears dirty or contaminated, perform an oil change.

3. Check Oil Filter Installation

• Locate the oil filter and inspect for any leaks.
• If the filter is loose, tighten it by hand until snug, then check for leaks.
• If the filter is damaged, replace it with a new one.

4. Verify Drain Plug Tightness

• Locate the oil drain plug under the vehicle.
• Using a socket set, ensure the drain plug is tightened to the manufacturer’s specifications (typically around 25-30 Nm).
• Check for oil leaks around the drain plug.

5. Inspect Engine Sensors and Wiring

• Visually inspect the engine wiring harness for any loose, disconnected, or damaged connectors.
• Reconnect any loose connectors and secure wiring as necessary.
• If any sensors are damaged, replace them accordingly.