oliverkoehler11

Mistra Exhaust Pressure Sensor Issue

Experiencing a warning light and smoke when accelerating in my 2021 Hyundai Mistra, gasoline engine, with 135494 km. Diagnostics point to a defective exhaust back pressure sensor. Anyone else encountered this?

A 2021 Hyundai Mistra with 135,494 km exhibited a warning light and smoke during acceleration, diagnosed as a defective exhaust back pressure sensor. The issue was confirmed by a workshop, which replaced the faulty sensor, resolving the problem.

Did this summary help you solve your problem?

4 comment(s)

That sounds familiar. I had a similar issue with my old Renault Megane. Same symptoms – warning light and smoke under acceleration. The problem turned out to be a faulty pressure sensor in the exhaust system. Have you checked the sensor's wiring and connections?

Thanks for the quick reply! I've visually inspected the wiring and connections, but I haven't tested them with a multimeter. What readings should I be looking for? Is there a specific voltage range I should expect from a functioning sensor?

Unfortunately, I don't recall the exact voltage readings, and it probably differs between manufacturers anyway. Given the symptoms and the diagnostic code, it's likely the sensor itself is faulty. I'd suggest taking it to a workshop; they can confirm the diagnosis and replace the sensor.

Thanks, I appreciate the advice. Took it to a trusted shop, and they confirmed the sensor was indeed defective. Replaced it for 245€. Problem solved!

rmh_community_comment_box_header

community_crosslink_scanner_headline

community_crosslink_scanner_intro

community_crosslink_scanner_title

community_crosslink_scanner_price

community_crosslink_rmh_headline

community_crosslink_rmh_intro

community_crosslink_rmh_title

community_crosslink_rmh_subtitle

community_crosslink_rmh_brand

HYUNDAI

community_crosslink_rmh_model

MISTRA