New code.....any ideas please.

[merc85]

Its M4.3/M4.4 and Fenix5.2 unfortunately bud.

Anyway, ecu is on page 17 and O2 sensors are items 7/15 and 7/82

soz buddy, didn't know if me7 was one of the above ,

[Dangerous Dave]

soz buddy, didn't know if me7 was one of the above ,

Its ok dude, it doesnt't state which one in the title, good info nonetheless.

[V70 Graham]

There`s be your problem.

And why's that Rob ?

[oblark]

And why's that Rob ?

Aftermarket cats are not made to the same standard as Volvo cats

Aftermarket ones have "coated" plates instead of honey cone blocks like volvo ones so more harmful gases get through the aftermarket ones and set off a fault caode.

I would keep a look out for a good condition second hand volvo down pipe.

[merc85]

Aftermarket cats are not made to the same standard as Volvo cats

Aftermarket ones have "coated" plates instead of honey cone blocks like volvo ones so more harmful gases get through the aftermarket ones and set off a fault caode.

I would keep a look out for a good condition second hand volvo down pipe.

http://www.ebay.co.uk/itm/VOLVO-S70-...item417ab14d16

[V70 Graham]

Aftermarket cats are not made to the same standard as Volvo cats

Aftermarket ones have "coated" plates instead of honey cone blocks like volvo ones so more harmful gases get through the aftermarket ones and set off a fault caode.

I would keep a look out for a good condition second hand volvo down pipe.

I appreciate they are not made the same but the code is :

02 Sensor Circuit No Activity Detected (Bank I Sensor 1)

This leads me to believe that there is no electrical activity, surely if it were too rich or too lean it would throw a different code.

After speaking to Anne this is something we are not going to spend a lot of time or money on, I will be telling the garage to check the wiring/plug/fuse and for any leaks in the system, and see what they come up with by the middle of the week.

[stribo]

There`s be your problem.

I appreciate they are not made the same but the code is :

02 Sensor Circuit No Activity Detected (Bank I Sensor 1)

This leads me to believe that there is no electrical activity, surely if it were too rich or too lean it would throw a different code.

After speaking to Anne this is something we are not going to spend a lot of time or money on, I will be telling the garage to check the wiring/plug/fuse and for any leaks in the system, and see what they come up with by the middle of the week.

As Graham says from the fault code, it wouldn't matter if there was no cat fitted, if lambda 1 is throwing a no activity fault then it's either the lambda itself (which has been changed) or the wiring to the sensor, which is what my money's on.

[V70 Graham]

Just had a call from the garage, it's ready

Turns out it was the rear sensor, it was the preheating circuits shorting to the other (front) sensor causing the code.

Hopefully by 1830 I'll have her back.

[M-R-P]

Just had a call from the garage, it's ready

Turns out it was the rear sensor, it was the preheating circuits shorting to the other (front) sensor causing the code.

Hopefully by 1830 I'll have her back.

[deathrider311271]

nice one Graham pleased you got yours sorted mate

[V70 Graham]

nice one Graham pleased you got yours sorted mate

You know me Simon, I'll be happy when I have it back and have checked the code doesn't return, but it's looking good.

[partsforvolvos.com]

I know this is going to sound silly, but seeing as they also said the oe part I sent for the rear was wrong they aren't looking at the rear sensor instead of the front are they?
because it is so high up close to the engine plenty of people have looked at the rear one, and thought it was the front.

the sensors are not the same for front and rear. might be same size, but normally the plugs are different on purpose .

[V70 Graham]

I shall know more when I have spoken to them later.

[partsforvolvos.com]

Good news.

the difference between cats discussed above sounds like comparing metal cats, to a ceramic one to me. they are different articles. the ceramic is best for efficiency, and in fact most metal cats cant gain type approval as legally required for 2000 onwards parts.

[960kg]

If your error code still comes back Graham don`t despair because our ECU`s are adaptive it has to learn a new part has been fitted especially an important part such as the O2 sensor and the ECU will extinguish the code or light when about 6 cold starts has been attained or it has learned.

If one forgets to erase the error code when the new part is fitted the ECU will use the adaptions it has learned from the old for the new part! .......so the code won`t go until it has learned.

Best thing to do is just use it then check for the code in a weeks time of course if it`s gone all well and good.

[V70 Graham]

Well just back from the garage, car seems ok, no engine light or any codes.

When I used the car last over Christmas going up to Anne's sister in Cambs I was averaging only 30 mpg on the motorway (60-70mph) tonight on the way back on the M40 at the same speed the economy has gone back up to 39mpg so all good there.

Hopefully this has cured the problem, saying that it must have been a bloomin gold plated sensor the price of it lol, the garage were good though, no diagnostic charge just an hours labour for all the messing about they had to do, and that included a loan car.

[AndysR]

Wow, only just caught this thread, although not sure how I missed it. Glad to hear it's all sorted though