ECU Fault Lambda Sensor

foototter · Aug 9th, 2011, 13:53

Hi

I am looking for some advice.
I have a 2000 mk1 V70 estate on 168,000 miles that has just failed it's MOT on emissions!
It has been a Bosch rig which is showing a fault either with the front Lambda sensor or the wiring itself, but they are not able to clear the fault. I have been advised that even if the lambda sensor is replaced, if the fault cannot be cleared it may still fail on emissions. I have already had the cat replaced on initial advice along with some front suspension ball joints.
I have been told that I need to take it Volvo to have the fault fully diagnosed and cleared!?
Given the age and mileage of the car, there is a limit on how much more I spend on it, as it is probably not worth that much, and I know that Volvo will not be cheap!
Is there anyone that has come across this problem and has any advice on this??

Many thanks

Tim

deathrider311271 · Aug 9th, 2011, 19:09

i had a fault on my post cat lambda, engine light permanently on, i found out it was one of the wires at the connector wasnt connecting properly.

Actually fixed this today i by passed the connector and hard wired it together, engine light now gone after clearing code

Worth a check thro the wireing, what code are u getting?

foototter · Aug 10th, 2011, 10:36

Hi, thanks for the advice.

I have been told that the fault codes are:
2110-Front heated oxygen sensor heating
720A-immobiliser communication, faulty signal

Only found these out yesterday.
I have now booked it in with Volvo for a full diagnostic on their system, to see what they come up with.

Chris_Rogers · Aug 10th, 2011, 11:14

Don't see much point in taking it to Volvo, you will only find out what you already know.

Which engine ihas this car?

Aug 9th, 2011, 13:53	#1
foototter New Member Last Online: Nov 17th, 2012 16:34 Join Date: Sep 2008 Location: Biggleswade	ECU Fault Lambda Sensor Hi I am looking for some advice. I have a 2000 mk1 V70 estate on 168,000 miles that has just failed it's MOT on emissions! It has been a Bosch rig which is showing a fault either with the front Lambda sensor or the wiring itself, but they are not able to clear the fault. I have been advised that even if the lambda sensor is replaced, if the fault cannot be cleared it may still fail on emissions. I have already had the cat replaced on initial advice along with some front suspension ball joints. I have been told that I need to take it Volvo to have the fault fully diagnosed and cleared!? Given the age and mileage of the car, there is a limit on how much more I spend on it, as it is probably not worth that much, and I know that Volvo will not be cheap! Is there anyone that has come across this problem and has any advice on this?? Many thanks Tim

Aug 10th, 2011, 10:36	#3
foototter New Member Last Online: Nov 17th, 2012 16:34 Join Date: Sep 2008 Location: Biggleswade	Fault Codes Hi, thanks for the advice. I have been told that the fault codes are: 2110-Front heated oxygen sensor heating 720A-immobiliser communication, faulty signal Only found these out yesterday. I have now booked it in with Volvo for a full diagnostic on their system, to see what they come up with.

Aug 9th, 2011, 19:09	#2
deathrider311271 I've Been Banned Last Online: Jun 21st, 2022 19:26 Join Date: Mar 2010 Location: Grimsby	i had a fault on my post cat lambda, engine light permanently on, i found out it was one of the wires at the connector wasnt connecting properly. Actually fixed this today i by passed the connector and hard wired it together, engine light now gone after clearing code Worth a check thro the wireing, what code are u getting?

Aug 10th, 2011, 11:14	#4
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	Don't see much point in taking it to Volvo, you will only find out what you already know. Which engine ihas this car?

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