Problem with Lambda sensors

[Nathan Quigley]

so scanned the car as it seems to be using fuel like crazy and was surprised to see all these codes related to both lambda sensors, surely they both cant fail electrically? I've checked fuses on the interior fuse board etc and all seems okay? Anyone had anything like this before?

 

[Nathan Quigley]

Car has been remapped so don't worry about n112 or n249 valves

 

[Alexis27]

They're both on the same circuit I think. Both going at once would point to wiring rather than sensors.

 

[Nathan Quigley]

If one sensor is open circuit do you reckon it would cause both to flag up?

 

[Alexis27]

I don't think the fault codes are that efficient to always accurately label them as "implausible signal" or "open circuit" etc.
Any wiring break can cause it to get confused.

I think you'll just have to get it up on ramp and look at the cables from the sensors.

 

[mty12345]

If one sensor is open circuit do you reckon it would cause both to flag up?

Doubtful.
Maybe have a look at live data, see if they are responding

 

[Nathan Quigley]

Still getting the codes however it had an emissions test yesterday and passed the lambda test, but found that it had an exhaust leak just before the turbo so think it might be that