Vauxhall Vivaro Engine Failure Hazard
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- เผยแพร่เมื่อ 5 ก.พ. 2025
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Vauxhall Vivaro Or Renault Trafic Engine Failure Hazard Explained: What You Need to Know
If you're a Vauxhall Vivaro Or Renault Trafic owner and you've seen warning lights on your dashboard, don't panic. When the engine failure hazard sign, spanner, and stop sign flash up, it can be alarming. However, in most cases, it doesn't mean your engine is about to pack up immediately. More often than not, it points to a sensor issue that needs addressing.
In this post, we explore a common scenario involving the Vivaro, breaking down what caused the fault, how it was diagnosed, and - most importantly - how it was fixed.
Fault Codes and What They Mean
The vehicle in question had a number of warning lights showing on the dashboard, and the first step was to run a scan and generate a Health Report. This produced several fault codes, the key ones being:
P0471-95: Pressure upstream of the turbine - incorrect mounting
P2002-92: DPF particulate filter clogged
P0380-96: Preheating unit (Glow Plugs)
253F29: Engine oil dilution
Some of these might sound worrying, but they don’t necessarily mean major damage. It’s all about narrowing down the exact cause.
Analysing the Pressure Problem
The first code we looked into was P0471-95, relating to the pressure upstream of the turbine. Sometimes this type of error is caused by a blocked pipe, a dead sensor, or even a burst rubber hose. By inspecting the live data, we could see that the upstream pressure wasn’t responding as it should, which suggested the sensor had failed or something was physically obstructing it.
Looking deeper, we found the differential pressure gauge was giving us readings that didn't make sense - the sensor wasn’t moving. Sure enough, checking under the bonnet revealed that someone had tampered with the sensor and the tube. The sensor was wonky, and wedged into place incorrectly.
Cleaning the DPF and Fixing the Blockages
With clear signs that the DPF (Diesel Particulate Filter) was blocked, we had to tackle that next. This is a common issue that can trigger several fault codes, including P2002-92.
We added DPF cleaning fluid into the tube connected to the sensor, allowing the solution to soak in and break down the blockage. Applying pressure helped push the cleaner further into the system. After letting that sit, we tested it again and found that the sensor was still faulty. At this point, replacing the sensor was the only option.
After fitting the new sensor, everything looked much better. The readings on the live data were spot on, with no more flatlining.
Replacing the Glow Plugs
When working through these issues, another fault cropped up - the preheating diagnostic for the glow plugs. To solve this, all four glow plugs were removed and tested. Numbers one and four showed no resistance, indicating they were faulty.
It's best practice to change all four glow plugs at once, even if only one or two are causing issues. So, after fitting a new set, we moved on to finish the other repairs.
Changing the Engine Oil and Clearing the Codes
As part of the process, we drained the old engine oil and replaced it, adding a fresh filter as well. Keeping engine oil clean is crucial, especially after clearing blockages in the DPF, as the engine could experience some oil dilution, which was seen here with fault code 253F29.
Once all the physical parts were sorted, it was time to tackle the software side. Fault codes were cleared, and the engine control system reset.
Final Checks
Even though the fault codes were cleared, it’s important to let the engine run and monitor live data to check everything has returned to normal. This involved holding the revs at around 3,000 RPM to make sure all sensors were working correctly, especially those relating to DPF pressure and the soot load.
The goal is to get readings below 6g of soot and 6 mbar of pressure at idle - an indication the DPF is not clogged and the system is healthy.
The vehicle had only done 74,000 miles, and once everything was settled, the final step was to reset the oil service interval. With everything reassembled and tested, the engine lights were off, and the Vivaro was back in business.
Conclusion
If your Vauxhall Vivaro flashes up with engine failure hazards, don’t assume the worst. Most of the time, it's due to sensor issues or blockages in the DPF system. Using diagnostic tools and addressing the fault codes directly will usually get you back on the road quickly.
From checking faulty sensors to replacing glow plugs and clearing DPF blockages, these fixes are generally simple but must be done right. If your Vivaro’s dashboard looks like a Christmas tree, it's always best to get a professional to diagnose the problem correctly before things escalate.
Need help with your van? Book a repair service at Orileys Autos - we’ll get your vehicle running smoothly again.
25k miles between oil change is a joke. Great vid as usual fella.
Crazy , you should never go over 20k or one year
@@liambyrne59110k max. With these Euro6 engines & oil dilution the oil is like water in them.
Manufacturers just want your money, they want to sell you more replacement parts or another car hence this interval.
Same with lifetime oil on gearboxes.
@@danpeters7850 even more weid the twinturbo version has the same intervals but also gets like 3L more oil 😅
It’s so they can make them more desirable as fleet vans . Massive service intervals is pretty good if you’re binning the van off after 4 years or so . Not so good if you want to keep it
You really should be teaching all of this in a college as your knowledge about these things is something that needs passing on.
I bet there isn’t a main dealer “technician” in the country that can even come close to you.
You’re the man . I owe you a beer as cause Iv watched all your videos I learned how to do my vapourizer and clean the dpf . I bought the kingbolen k7 too to help me. It took a few days to kind of get what I wanted but I never touched the regen button. Thanks again matey .
Glad to help
The van whisperer strikes again. Well done Jimmy!
Your renault and alike video have help be out sorting my fleet dpf faults.
Top job jimmy. That customer is lucky to see you. Engine dash faults are not always clear on these opels, Vauxhalls etc. pop up for all sorts of reasons(my zafira drives me mad), but I have learnt so much from you regarding EGRs, Dpfs, oil (Now 5k change with filter) and glow plugs which i recently changed. My basic launch scan tool is a bit limited, so need to upgrade.. what Launch scan tool iS this one???? Looked good
Love the content Jimmy, keep the Vivaro vids coming! A lifeline🤣👍
More to come!
Brilliant diagnosis, fault finding, and fix!
I had this alarm when foxes chewed through my DPF pipes, (2015 Vivaro Biturbo), then again this year when the barstewrds chewed through the temp sensor wire and shorted the two cables together. No DTC, but i noticed the EGT reading number 3? was at 458 degrees just after start up...
Have you access to a rifle. 😉
Do you get many NOX sensor faults? Both mine have suddenly gone out of range, but they look spotless.... Replacements on order. Great video, this would have beaten a lot of mechanics before they'd even started.
Great video Jimmy what type of cable did you run through with the drill ? Would welding wire work ? I am experiencing this fault also , thanks
@@rossp446 no. Solid one piece wire wont work. Twisted steel wire ist best
Hi Jimmy.. fantastic work.. what model Launch scanner are you using in this video?
Is it in the show notes?
Nice one Jimmy 👍
Thanks 👍
Great video once again 👌 what's the operating tempature that these van get up to on a drive? Should they hit 90 degrees and hover around there? Stuck at the moment and no better man that knows these vans to answer the question 👍
80-90
Perfect job
I noticed you didn’t use your usual Mityvac, when testing for the blockage. What brand is that one Jimmy?
Hopefully, it's a bit cheaper
I managed to bag one on AliExpress for around £20 delivered.
In german the failure hazard warning is even scarier.
here it says "engine can be destroyed"😂
(but of course in German)
Can anyone help and advise what is the most effective way to inject the launch fluid. Boost pressure sensor, o2 sensor or direct into the side of the dpf. Thanks
You really know your stuff should the dipstick read like that permanently I’ve always gone to top line
Oil level can increase when the van does a dpf regen on its own , and if it does it too many times without dpf regen success, oil dilution fault occurs
@ I was referring to when he topped up after changing the oil
@@adamevo6 so was I , that's why we don't fill to top level nowadays 👍
@@mikeberry304 oh ok, I’ve had mine since new 2017 and I’ve always kept it at the maximum line. Now on 100k no issues apart from adblue nox
These vauxhall vans are getting worse 😢
Keep trying to contact you re my golf. With dpf problem?
What is the problem with it