Why is the engine malfunction indicator light on in a van?

2 Answers
VanHannah
07/25/25 3:29am
It is recommended to have the van inspected at a professional repair shop when the engine malfunction indicator light is on. Here are some possible reasons for the engine malfunction indicator light being on: 1. Poor fuel quality: The engine has specific requirements for fuel quality standards. As regulations impose increasingly stringent requirements on engines, the fuel quality standards must also meet higher demands. 2. Carbon deposits inside the cylinders: Carbon deposits can alter the engine's design parameters. Additionally, carbon is inherently unstable and retains heat. These accumulated heat spots can cause uncontrolled ignition in the engine, leading to engine knocking, which in turn triggers the engine malfunction indicator light.
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SanMax
08/10/25 5:00pm
I was just driving my van for deliveries when the check engine light came on, and I got a bit nervous. This light indicates an engine issue, most commonly a sensor malfunction, like the oxygen sensor detecting excessive emissions or a faulty mass airflow sensor. Sometimes, a loose gas cap can also trigger the warning. It could also be an ignition system problem, such as worn-out spark plugs causing misfires and affecting combustion efficiency. If the car shakes violently after starting or fuel consumption suddenly spikes, the issue is likely serious. Don’t delay—find a place to pull over and check the oil and coolant levels, or visit a repair shop to scan for trouble codes with a diagnostic tool to prevent further damage. Regular maintenance can minimize such surprises since the engine is a core component, and repairs can be costly and time-consuming if problems escalate.
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