What causes the Peugeot 408 to display an engine fault?
2 Answers
There are many reasons why the Peugeot 408 displays an engine fault, possibly due to a malfunction of the sensors on the engine. The engine is surrounded by many sensors, and without these sensors, the engine cannot operate normally. When this situation occurs, the fault code should be read, then the cause and location of the fault should be identified, and finally, the issue should be repaired. The Peugeot 408 is a compact car under the Peugeot brand, equipped with two types of engines: a 1.2-liter turbocharged engine and a 1.6-liter turbocharged engine. The front suspension of this car uses a MacPherson independent suspension, while the rear suspension uses a torsion beam non-independent suspension.
My Peugeot 408's engine warning light has come on several times, and each time it makes me nervous. Common causes are mainly sensor issues, like a dirty or burnt oxygen sensor measuring exhaust emissions, leading to excessive emissions; it could also be an ignition system failure, such as aging spark plugs or faulty ignition coils, causing incomplete combustion. Once, insufficient fuel supply from the fuel pump directly triggered the alarm. Don't underestimate it—it could be something serious, like a loose timing chain or a clogged catalytic converter. I would immediately pull over safely and avoid driving further; use an OBD diagnostic tool to read the fault codes, get a general idea of the problem area, and then decide whether to go to a repair shop. It's recommended to use high-quality gasoline daily and regularly check the air filter and spark plugs to reduce such issues. Remember, when the light comes on, check if the coolant temperature is too high to avoid engine overheating damage.
