Seeking Advice on 2018 Nissan Quest Issues: Black Smoke, Check Engine Light, and High Fuel Consumption

Hey, I've got a 2015 Nissan Juke which had a similar issue not too long ago. Yeap, a lot of black smoke, check engine light was a constant friend and not to forget the strange fuel consumption. Sadly, the culprit turned out to be the lambda sensor heater, just like you suspected. Through its job in the engine's control loop, it monitors how much oxygen is in the exhaust so the engine can tell whether it's burning rich or lean. If this thing is busted, it's not good news at all. Getting it replaced wasn't a walk in the park for me either. To cane it back to normal, the mechanic had to locate the lambda sensor, disconnect it, remove the faulty one and install a fresh one properly. Quite a delicate job since it is located in a sensitive area - right inside the exhaust system. That's a whole lot of work if you ask me! But remember, it's crucial to take care of it ASAP before it seriously damages your engine or catalytic converter in the long run. So dude, don't dilly-dally. Get your vehicle to a reputable garage and have it sorted. Good luck with your ride!

(Translated from German)

Hey there! Thanks for sharing your experience with the lambda sensor heater, sounds a whole lot like the problem my Quest has been giving me. Got me wondering, do you happen to remember how much you had to cough up for the fix? And post-repair, did everything go back to running smooth or did any other gremlins pop up? Just trying to brace myself for what’s coming, you know! Thanks again!

(Translated from German)

Hey, no worries dude, happy to share the experience! Regarding the cost of the fix, it ended up stinging me for about 375€. That covered the whole nine yards - parts and labor to get the lambda sensor heater fixed. And to answer your other question - since the repair, the ride's been as smooth as silk! Absolutely no other annoying gremlins popped up. The heavy smoking stopped, the engine light switched off and the fuel consumption returned back to normal. It was like the whole nightmare was finally over, you know? So, despite the hit to the wallet, it's totally worth getting it fixed. I mean, driving with a broken lambda sensor is not a gamble you'd wanna take. Plus, having it done by a pro gives you some peace of mind. Hope this helps! Stay safe on the roads!

(Translated from German)

Hello again, you don't know how relieved I am to hear that. 375€ doesn't seem too bad considering the hassle it'll save me. And hearing that everything smoothed out post-repair is music to my ears! I mean, that annoying check engine light was like a constant reminder of the pain my poor Quest was going through! And don't even get me started on the fuel bills! Time to put my vehicle's misery (and mine) to an end, eh? Your insightful experience has definitely given me a push to get my car to the mechanic ASAP. Can't afford to have my engine or catalytic converter sabotaged by a faulty lambda sensor. That'll cost me a fortune! Thanks a ton once again, man! I'll keep you posted about how it goes. Drive safe, catch you later!

(Translated from German)