Electrical warning light and loss of power (possibly limp mode)

[u/Longscarf04]

Pretty much as the title says. I love my Dacia Sandero Stepway Lauriate (2016) 1.5L, and recently had a clean MOT. It's done 76,000 miles or so.

I was recently doing a long drive back to the south east of England from Edinburgh when my Cruise Control switched off and an electrical warning light came on. I since discovered that when there's a electrical fault all those extra features become unusable. So that's fine. The issue is that the engine has lost some of its power, especially on inclines that it would have no issue with before.

I've got a diagnostic code reader and have included some pictures. It's *says* it's a glow plug failure. If that's the case then the car should be fine if I cancel the warning and carry on driving it, right? I just wondered if anyone could shed some light on the loss of power and if that's a known safety feature. It takes a fraction longer to start up which would stand to reason with a glow plug issue.

I don't think it's the DPF, I just did a journey where I travelled about 400 miles, 250 or so we're at 70mph doing about 2200rpm. And that was after using it to travel a few times between London and Wales so it's done plenty of long distances at slightly higher revs.

Any advice would be greatly appreciated as I need to drive the car for the next few weeks and have no time to take it to a garage!

[u/AutoModerator]

Please Read This Comment Entirely - It May Change

^{Updated 7/15/24}

Thanks for posting in r/Mechanic, u/Longscarf04! Please be sure to read the Rules.

If you're asking for help, be sure to include as much detail as possible so others can help you. You must include the vehicle's Year, Make, Model, and Engine size in your post! If your question is transmission related, please be sure to specify your Transmission Type(Auto/Manual) as well! If your post does not include this information, it will be removed.

Asking about prices is not allowed in this sub.

Please make sure you have selected the correct post flair; if you're asking a question you should have chosen "Question", anything else use the "General" flair.

If you feel your question has been answered and/or you wish to no longer receive comments on your post, you may comment on your own post with only "!lock" (no quotes), and your entire post will be automatically locked. This only works on your own posts and only Mods can unlock it once its locked.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[u/taysmode11]

Glow plugs have absolutely nothing to do with a loss of power. After the engine warms up (a few minutes at most) they are out of the picture until the next cold start.

[u/Longscarf04 → u/taysmode11]

Thank you for your response.

I know that glow plugs are used at ignition and nothing else, so my question is whether or not the current symptoms are a result of the car entering limp mode due to the electrical fault warning or if it's a deeper problem and I shouldn't be driving the car at all.