Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

What to do when our dashboard says "engine malfunction, repair necessary

Model: (Various brands) Various
Part: Instrument cluster

What should we do when our instrument panel shows the dreaded phrase "engine malfunction, repair necessary"? It is an error that appears on most cars, such as Opel, Vauxhall, Citroen, Peugeot, and some Toyota. The first thing that comes to mind is the emissions system, but what we should actually check first is the battery: about half of these warnings are actually related to a discharged AGM battery. The warning appears along with other lights and then disappears, and the car drives normally, only to reappear at the next restart along with other lights, so we are very worried. Other problems, it is true, can be caused by poor fuel combustion, due to faulty spark plugs or a faulty sensor, but in these cases, with a good scanning tool, it is easy to diagnose the problem, which can also be caused by certain AdBlue issues, but what the YouTuber recommends is always to check the battery first.

Posted on 17 March 2025 by ScegliAuto

Video tutorial

Related tutorials

Difference between engine control warning light and engine maintenance warning light
Difference between engine control warning light and engine maintenance warning light
(Various brands) Various In this video we see what the difference is between the engine warning light and the maintenance light. The engine warning light is yellow/amber and …
How to reset error code 01 on a Kymco scooter?
How to reset error code 01 on a Kymco scooter?
(Various brands) Various Sometimes it can happen that, after a breakdown in the injection system, the error code 01 continues to appear on the dashboard of our Kymco scooter …
What to do if the oil warning light comes on in our vehicle?
What to do if the oil warning light comes on in our vehicle?
(Various brands) Various The task of motor oil is to lubricate, cool, and clean our engine. To do all this, it needs a strong pressure that can be filtered or sprayed dependi…

Other guides you may be interested in

    Frequently Asked Questions

    • Vari - How to set the time on Piaggio Medley? Read answer

How to Open a Stuck Boot on the Peugeot 407?

On the Peugeot 407, the boot may become stuck, possibly due to a problem with the control button or the lock actuator. In such cases, you can perform an emergency opening by following the simple procedure shown in this tutorial. First, open the rear doors, then lower the seat back by operating the release lever. Next, go inside the boot, locate the lock, and manually operate it using a flathead screwdriver. The boot will then be free to open.

Watch the video!


by ScegliAuto

More videos