Both NOX sensors need replacing - advice!
Discussion
Hi all,
Owner of a 2019 Peugeot 5008 1.6 Diesel GT Line here, currently on 66k miles.
Have had a repeated engine warning light appearing, with Ad Blue error and countdown clock of mileage before impossible to start.
Garage just reset it originally, they now believe that both NOX sensors need replacing, at a cost of £1k.
I phoned one garage for an alternative quote, which he wouldn't give me over the phone, but raised a degree of caution that if both sensors need replacing, it may be part of a broader issue?
My current plan is to sell the car in the next 9-12 months, so very nervous of being stung with ongoing big costs!
So, any help would be greatly appreciated.
a) Does this sound right as a resolution ?
b) does this cost feel appropriate (indpendent garage)
c) Should I worry about broader issues, and if so, over what timeframe?
Thanks in advance!
Steve
Owner of a 2019 Peugeot 5008 1.6 Diesel GT Line here, currently on 66k miles.
Have had a repeated engine warning light appearing, with Ad Blue error and countdown clock of mileage before impossible to start.
Garage just reset it originally, they now believe that both NOX sensors need replacing, at a cost of £1k.
I phoned one garage for an alternative quote, which he wouldn't give me over the phone, but raised a degree of caution that if both sensors need replacing, it may be part of a broader issue?
My current plan is to sell the car in the next 9-12 months, so very nervous of being stung with ongoing big costs!
So, any help would be greatly appreciated.
a) Does this sound right as a resolution ?
b) does this cost feel appropriate (indpendent garage)
c) Should I worry about broader issues, and if so, over what timeframe?
Thanks in advance!
Steve
There's about 10,000 ECU fault codes, half of which would light up the EML, so its impossible to say what it is simply from the symptoms you describe. It needs diagnosing properly. Since a garage has had hands on it, and I'm just sitting at the other end of the internet, not really possible to help further without more information.
You could always get your own code scanner, scan the car and let us know the code(s).
You could always get your own code scanner, scan the car and let us know the code(s).
sg0102 said:
Yeah, not totally sure why it s both! Considering disabling the EGR now as am planning selling soon and just can t afford the cost right now.
Disabling the EGR will make no difference. NOx sensors are part of the ad-blu system, the first measures the NOx to work how much ad-blu to inject and the second confirms it worked.sg0102 said:
Ah, maybe I m taking about the wrong thing? Is it ECU remapping I mean? Or is that the same!?
No offense meant, but if you were planning to do this yourself then I suggest you give up on that idea, based on the level of understanding you have currently. If you're planning to pay somebody else to do it then I suggest the only sensible approach is to pay somebody to fix your actual problem. If you try to diagnose it yourself and use the interweb to figure out what might fix it and tell them to do that, I'm sure they'll happily take your money but you've no reason to expect it will actually fix the problem and no come-back against them if it doesn't. From your replies I don't get the impression you want to throw money at it speculatively.Fair comment mate!
If I step away from trying to use terminology, I was under the impression there was something you can do - not clear on what - which makes adblue / emissions monitoring redundant. Given that’s what the NOX sensors, I believe are there to do, it made sense in principle to negate the need for them.
But I am likely wrong as I am definitely not Pistonhead.
If I step away from trying to use terminology, I was under the impression there was something you can do - not clear on what - which makes adblue / emissions monitoring redundant. Given that’s what the NOX sensors, I believe are there to do, it made sense in principle to negate the need for them.
But I am likely wrong as I am definitely not Pistonhead.
Adblue and nox usually go together, ECU measures what NOX goes into the exhaust, what comes out and then injects Adblue in to lower the NOX emissions when required.
The adblue tank is the most common failure on these followed by the injector (have a look and see if its corroded) it sits in the downpipe and leaks. NOX fault codes can be as a result of the system not working and not always a sensor fault. The nox sensors can sometimes be seen as lambda sensors.
Like this …
The adblue tank is the most common failure on these followed by the injector (have a look and see if its corroded) it sits in the downpipe and leaks. NOX fault codes can be as a result of the system not working and not always a sensor fault. The nox sensors can sometimes be seen as lambda sensors.
Like this …
Edited by stevemcs on Monday 24th November 20:49
sg0102 said:
I was under the impression there was something you can do - not clear on what - which makes adblue / emissions monitoring redundant. Given that s what the NOX sensors, I believe are there to do, it made sense in principle to negate the need for them.
Yes, there are but it is not legal to disable/bypass any part of an emissions control system.As was said above, get a second opinion and get the problem fixed before it becomes a real problem.
ComStrike said:
Megaflow said:
I believe the ad-blu system can be deactivated
Which then clogs the DPF as it stop regenerating, then it destroys the turbo & pumps more exhausts gases back into the crankcase .....Yeah .. great idea
Have you checked the Ad-Blue level? is the tank full or been run low? because you will get odd errors if the system runs low from what you describe to comms issues when all it needs is a NOX system re-boot/initialisation with a suitable diagnostic tool I know because ive done them previously yes NOX sensors can give issues but not always the fault of the Ad Blue system failure/errors/countdown, got to say I find PSA / Fords software often irritating for reasons like these
Edited by Sardonicus on Friday 5th December 13:09
ComStrike said:
Megaflow said:
I believe the ad-blu system can be deactivated
Which then clogs the DPF as it stop regenerating, then it destroys the turbo & pumps more exhausts gases back into the crankcase .....Yeah .. great idea
I imagine the OP has come to a solution by now but the three options suggested (repair, delete, sell) would all work and each has their own pros and cons.
Repair keeps the car OE and fully compliant but may be expensive.
Delete tends to be the most economical route and avoids further Adblue issues in future which would otherwise be highly likely. Downside is it is illegal to run a car on the road with any emissions equipment disabled or removed. It is also illegal to have an air freshener hanging off your rear view mirror and you are about as likely to get fined for that.
Selling gets rid of the problem all together but unless you are going you buy a pushbike comes at a cost and you may sell one car with issues and buy another.
Steve H said:
Utter garbage.
I imagine the OP has come to a solution by now but the three options suggested (repair, delete, sell) would all work and each has their own pros and cons.
Repair keeps the car OE and fully compliant but may be expensive.
Delete tends to be the most economical route and avoids further Adblue issues in future which would otherwise be highly likely. Downside is it is illegal to run a car on the road with any emissions equipment disabled or removed. It is also illegal to have an air freshener hanging off your rear view mirror and you are about as likely to get fined for that.
Selling gets rid of the problem all together but unless you are going you buy a pushbike comes at a cost and you may sell one car with issues and buy another.
If your car fails its MoT for an air freshener hanging off the rear view mirror, its pretty simple to remove it and do a retest (or the tester might do it for you anyway, if he's a nice guy, to save the bother).I imagine the OP has come to a solution by now but the three options suggested (repair, delete, sell) would all work and each has their own pros and cons.
Repair keeps the car OE and fully compliant but may be expensive.
Delete tends to be the most economical route and avoids further Adblue issues in future which would otherwise be highly likely. Downside is it is illegal to run a car on the road with any emissions equipment disabled or removed. It is also illegal to have an air freshener hanging off your rear view mirror and you are about as likely to get fined for that.
Selling gets rid of the problem all together but unless you are going you buy a pushbike comes at a cost and you may sell one car with issues and buy another.
If your car fails its MoT for emissions, he is unlikely to refit the DPF for free. Since the emissions testing equipment has to be linked to the MoT computer these days, the avenues for a "dodgy MoT" are closing too.
paul_c123 said:
Steve H said:
Utter garbage.
I imagine the OP has come to a solution by now but the three options suggested (repair, delete, sell) would all work and each has their own pros and cons.
Repair keeps the car OE and fully compliant but may be expensive.
Delete tends to be the most economical route and avoids further Adblue issues in future which would otherwise be highly likely. Downside is it is illegal to run a car on the road with any emissions equipment disabled or removed. It is also illegal to have an air freshener hanging off your rear view mirror and you are about as likely to get fined for that.
Selling gets rid of the problem all together but unless you are going you buy a pushbike comes at a cost and you may sell one car with issues and buy another.
If your car fails its MoT for an air freshener hanging off the rear view mirror, its pretty simple to remove it and do a retest (or the tester might do it for you anyway, if he's a nice guy, to save the bother).I imagine the OP has come to a solution by now but the three options suggested (repair, delete, sell) would all work and each has their own pros and cons.
Repair keeps the car OE and fully compliant but may be expensive.
Delete tends to be the most economical route and avoids further Adblue issues in future which would otherwise be highly likely. Downside is it is illegal to run a car on the road with any emissions equipment disabled or removed. It is also illegal to have an air freshener hanging off your rear view mirror and you are about as likely to get fined for that.
Selling gets rid of the problem all together but unless you are going you buy a pushbike comes at a cost and you may sell one car with issues and buy another.
If your car fails its MoT for emissions, he is unlikely to refit the DPF for free. Since the emissions testing equipment has to be linked to the MoT computer these days, the avenues for a "dodgy MoT" are closing too.
Hopefully you understand that they are different things but in case you don’t then it’s also worth mentioning that the MoT doesn’t test the Adblue system (other than a check for dashboard warnings) so the emission tester could be linked directly to VOSA and it wouldn’t matter - a car with an Adblue delete is just as likely to pass a legit test as one with the system fitted.
There have been suggestions of more detailed emissions testing to include NOx but because most NOx emissions are created under part load it’s fairly impractical to bring anything in. Instead they will just count down to banning ICE engines entirely, if they ever manage to work out a practical alternative that is.
Steve H said:
We are talking about NOx sensors and Adblue not DPFs, and DPFs are not affected by Adblue solutions.
Hopefully you understand that they are different things but in case you don t then it s also worth mentioning that the MoT doesn t test the Adblue system (other than a check for dashboard warnings) so the emission tester could be linked directly to VOSA and it wouldn t matter - a car with an Adblue delete is just as likely to pass a legit test as one with the system fitted.
There have been suggestions of more detailed emissions testing to include NOx but because most NOx emissions are created under part load it s fairly impractical to bring anything in. Instead they will just count down to banning ICE engines entirely, if they ever manage to work out a practical alternative that is.
Apologies, thought it was a DPF delete!!!!Hopefully you understand that they are different things but in case you don t then it s also worth mentioning that the MoT doesn t test the Adblue system (other than a check for dashboard warnings) so the emission tester could be linked directly to VOSA and it wouldn t matter - a car with an Adblue delete is just as likely to pass a legit test as one with the system fitted.
There have been suggestions of more detailed emissions testing to include NOx but because most NOx emissions are created under part load it s fairly impractical to bring anything in. Instead they will just count down to banning ICE engines entirely, if they ever manage to work out a practical alternative that is.
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