Fault code ECM - 250A

loucipher · Oct 1st, 2011, 18:57

hi
This is my first volvo so im hoping this is nothing too serious.

I bought a V70 XT 2.4 (reg Jan 2000) earlier this week and all seemed fine on test drive. It also had a full mot so went ahead with purchasing it.

Took it for a run today about 30-40 miles into the journey the engine management light came on, but there was no noticable change in performance.

I took it to the nearest dealer who ran a diagnostic and said that it showed fault code ECM-250A, which would indicate a problem with the fuel mix. being 12.30 on a saturday there was nothing more he could do for me until Monday, when he could investigate further. He assured me the car wuld be ok to drive home in.

I have checked the forums and cannot find any post listing this fault code.

Does anyone know what is wrong and how i can go about fixing it, without having to undergo open wallet surgery?

deathrider311271 · Oct 1st, 2011, 19:28

im assuming yours is a P2 car and not a P1, as for the code i would be thinking along the lines of lambda sensor as your fuel mixture seems to be weak for some reason.

Im sure the P2 people will know more about this than me.

I would also suggest posting over there or ask the mods to move it to the correct place

Simon

loucipher · Oct 1st, 2011, 19:56

hi

thanks for the quick responce.

total newbie here and to volvos so not sure what the difference between a p1 and p2 car is.

the car is old shape v70/850, it only just qualifies as a 2000, as registered on the 4th of january. Unfortunately dont have the log book yet to get any more details. Can look under the bonnet if you tell me where to look.

Chris_Rogers · Oct 1st, 2011, 21:31

If the car has no fault symptoms, apart from the light, then it's likely to be a failing oxygen sensor.

If the car drives poorly then it points to a failing MAF sensor, for the latter unplug the sensor and see if the car drives better.

Note the car has probably has a Denso engine management system so parts will be expensive but there are alternatives to Volvo prices.

Did you buy from a car dealer?

loucipher · Oct 2nd, 2011, 11:02

thanks for that i will look into oxegen sensor, as it is starting on the flick of the key and running smooth as anything, idleing fine etc. thee light being on is the only symptom.

and it was a private sale not a dealer.

RUTV70 · Oct 2nd, 2011, 12:32

+1..for oxy sensor....mine did exactly the same last year.
Code reader confirmed it and it was replaced...no problems since.
Mine's a Denso car too and I bought a Walker replacement from Ecolambda (HGL Sales) in Hull..tel. 01482 445566...cost £150.

You could also try Sparkplugs.co.uk..they may be slightly cheaper.
Neil

Oct 1st, 2011, 18:57	#1
loucipher New Member Last Online: Aug 23rd, 2013 15:55 Join Date: Oct 2011 Location: ipswich	Fault code ECM - 250A hi This is my first volvo so im hoping this is nothing too serious. I bought a V70 XT 2.4 (reg Jan 2000) earlier this week and all seemed fine on test drive. It also had a full mot so went ahead with purchasing it. Took it for a run today about 30-40 miles into the journey the engine management light came on, but there was no noticable change in performance. I took it to the nearest dealer who ran a diagnostic and said that it showed fault code ECM-250A, which would indicate a problem with the fuel mix. being 12.30 on a saturday there was nothing more he could do for me until Monday, when he could investigate further. He assured me the car wuld be ok to drive home in. I have checked the forums and cannot find any post listing this fault code. Does anyone know what is wrong and how i can go about fixing it, without having to undergo open wallet surgery?

Oct 2nd, 2011, 12:32	#6
RUTV70 RUTRUNNER Last Online: Jan 25th, 2016 11:32 Join Date: Nov 2009 Location: Oakham View Photos By: RUTV70	+1..for oxy sensor....mine did exactly the same last year. Code reader confirmed it and it was replaced...no problems since. Mine's a Denso car too and I bought a Walker replacement from Ecolambda (HGL Sales) in Hull..tel. 01482 445566...cost £150. You could also try Sparkplugs.co.uk..they may be slightly cheaper. Neil __________________ classic V70 1999MY 20 valve non turbo, auto (adaptive) B5254. ETM/Denso Previous Volvos...264 auto...loved it. 340 manual...not so loved. 760 auto...loved it.

Oct 1st, 2011, 19:28	#2
deathrider311271 I've Been Banned Last Online: Jun 21st, 2022 19:26 Join Date: Mar 2010 Location: Grimsby	im assuming yours is a P2 car and not a P1, as for the code i would be thinking along the lines of lambda sensor as your fuel mixture seems to be weak for some reason. Im sure the P2 people will know more about this than me. I would also suggest posting over there or ask the mods to move it to the correct place Simon

Oct 1st, 2011, 19:56	#3
loucipher New Member Last Online: Aug 23rd, 2013 15:55 Join Date: Oct 2011 Location: ipswich	hi thanks for the quick responce. total newbie here and to volvos so not sure what the difference between a p1 and p2 car is. the car is old shape v70/850, it only just qualifies as a 2000, as registered on the 4th of january. Unfortunately dont have the log book yet to get any more details. Can look under the bonnet if you tell me where to look.

Oct 1st, 2011, 21:31	#4
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	If the car has no fault symptoms, apart from the light, then it's likely to be a failing oxygen sensor. If the car drives poorly then it points to a failing MAF sensor, for the latter unplug the sensor and see if the car drives better. Note the car has probably has a Denso engine management system so parts will be expensive but there are alternatives to Volvo prices. Did you buy from a car dealer?

Oct 2nd, 2011, 11:02	#5
loucipher New Member Last Online: Aug 23rd, 2013 15:55 Join Date: Oct 2011 Location: ipswich	thanks for that i will look into oxegen sensor, as it is starting on the flick of the key and running smooth as anything, idleing fine etc. thee light being on is the only symptom. and it was a private sale not a dealer.

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