X1 fault codes

[J4CKO]

My mother in law has a 2016 X1 2.0 diesel X drive.

She is going to change it but wants it to be right before she sells it, so asked me to take a look as it has the engine light on.

It has the following codes showing when I plug my OBD tool in.

P0546 - Exhaust Gas Temperature Sensor Bank - Circuit High Bank 1

P00BC - Mass or Volume Air Flow A Circuit Range/ Performance - Air flow too low

P2243 - 02 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1

Its done just short of 40k in almost 8 years, so may be a lack of use has contributed.

Worth trying fitting a Lambda sensor and see if it sorts it or is there more to it ?

[d_a_n1979]

I'd double check the battery voltages first

If it's the original battery; it's probably due for a change

Low voltages can cause weird errors on these cars etc

Are the codes fresh as well; or old/stored etc?

[stevemcs]

Clear them, drive it for 10 miles then see what comes back.

[J4CKO]

My cheapy scan tool wont clear the codes, says not supported, will check the battery voltage.

I know what she will do, put four tyres, new bakes on and get all this sorted at BMW, spend maybe 2/3 grand, then part ex it and get like 10.

[RUSTILLDOWN]

J4CKO said:

My cheapy scan tool wont clear the codes, says not supported, will check the battery voltage.

I know what she will do, put four tyres, new bakes on and get all this sorted at BMW, spend maybe 2/3 grand, then part ex it and get like 10.

What tool do you use? Maybe an interesting new topic to share knowledge.

[d_a_n1979]

J4CKO said:

My cheapy scan tool wont clear the codes, says not supported, will check the battery voltage.

I know what she will do, put four tyres, new bakes on and get all this sorted at BMW, spend maybe 2/3 grand, then part ex it and get like 10.

As above; what is it you're using?


I've got the Creator C410 code reader off Amazon UK, c£60 and it's a superb little device, will register the battery to your car as well as showing some live data also. Well worth the investment

https://www.amazon.co.uk/Creator-Battery-Registrat...

[Triumph Man]

I've got an Autel AP200, and it's paid for itself back and more numerous times over (although it was only £60) The slight snag is you get one manufacturer "free" but then additional ones are £20 a year. It can also do things like force regens, and register a new battery (which given what Dan has said you will need to do if you stick a battery on it!)

ETA Apologies Dan I've just seen you mention another one that can do battery coding!

[stevemcs]

Has it had the BMW recall for the EGR ? I take it none of them clear ?

We have a newer Mini that comes into the workshop that has those 3 codes, we suspect its the EGR valve - BMW are cheapest for it. But you can clear them and it takes a few weeks to come back.

[J4CKO]

Will look into the EGR, she is away for a week so we have the car and I noticed it was a little slow to crank last night so could be battery.

She will need to take it in I think, not replacing the battery, sensors or whatever, just more a case of narrowing it down a bit so have some idea of what’s up.

[stevemcs]

I would very much doubt the battery will cause the egr fault.

[Jazoli]

If it was me I'd sell it as is, it's of no benefit to your mother to 'make it right' before sale and she may as well set fire to £20 notes.

[J4CKO]

Well, the warnings got more insistent, I took it in to a garage I use, they tried a Lambda sensor, turns out it was the turbo, so over three grand to sort out.

47k miles ffs.

[DJMC]

Is it in extended warranty by any chance?

We kept our identical X1 in warranty for 7yrs/102k miles (until sale) during which it had £15k's worth of free warranty work including £10k for a diesel sensor leak. Diesel everywhere including the ECUs, wiring loom, whole engine bay.

Have you checked if she extended hers?

[GreatGranny]

Getting worried now

Our 65 reg X1 18d S Drive has been 100% reliable for the last 3 years and 35k miles.

Only a matter of time?

Planning on keeping it until it dies.
It's on 93k miles.