antonmiller1

Scenic exhaust back pressure sensor fault

Hi, I'm having a nightmare with my 2010 Renault Scenic diesel. A warning light popped up, there's smoke when I accelerate, and the car won't do a DPF regeneration. Diagnostics suggest the exhaust back pressure sensor is playing up. Has anyone experienced something similar?

A 2010 Renault Scenic diesel is experiencing issues with a warning light, smoke during acceleration, and failure to perform DPF regeneration. Diagnostics indicate a faulty exhaust back pressure sensor, which can prevent DPF regeneration and cause over-fueling, leading to smoke. The recommended solution is to have the sensor checked and replaced by a professional workshop, which resolved the issue in this case.

Did this summary help you solve your problem?

4 comment(s)

Sounds familiar! I've got a Scenic too. Those symptoms definitely point to the exhaust back pressure sensor. If the ECU isn't getting the correct readings, it will prevent DPF regeneration and cause over-fuelling, which leads to the smoke you're seeing. Is the car down on power at all?

Thanks for the quick response! Yes, the engine feels like it's not performing as it should, especially at lower RPMs. How did you resolve your issue? Did you replace the sensor yourself, or did you take it to a garage?

Given the symptoms and the diagnostic code, it's almost certainly the sensor. I wouldn't recommend attempting the replacement yourself unless you're confident with vehicle electrics and have the right tools to reset the ECU afterwards. I'd suggest getting it checked out by a decent workshop.

Thanks a lot for the advice. I took it to the workshop, and you were spot on – the exhaust back pressure sensor was indeed faulty. They replaced it, cleared the codes, and all seems to be running smoothly now. Cost me around 245€ all in. Appreciate the help!

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

RENAULT

community_crosslink_rmh_model

SCENIC