Panda preheating lamp check engine light

Greetings. Your issue bears a striking resemblance to a problem I encountered previously with my Opel Astra, albeit a petrol variant. The symptoms you describe, particularly the persistent illumination of the preheating and check engine indicators, coupled with the emission of smoke during acceleration, suggest a potential malfunction within the engine management system. Did you consider a thorough inspection of all electrical connections associated with the glow control unit?

Interesting, thanks! When you say 'thorough inspection,' what exactly did that involve for you? What kind of defective electrical connection did you find?

Within the context of my aforementioned Opel Astra, "thorough inspection" encompassed a meticulous examination of all wiring harnesses, connectors, and grounding points linked to the engine control unit. This protocol was executed to identify any instances of corrosion, fraying, or dislodgement that may impede optimal electrical conductivity. Ultimately, my investigation proved fruitless, and I conceded to engaging the services of a certified automotive technician, who promptly diagnosed a faulty control unit. May I recommend a similar course of action for your consideration?

Thanks for the advice! Took it to the shop and you were right, the glow control unit was indeed defective, just like we suspected. They replaced it, new one cost 95€ including labor. Everything's running smoothly now!