Hi I have a 2014 Audi A3 saloon 8v 2000tdi I had car back at Audi today engine management lamp on as was told it was upstream lamda sensor that was problem ??the car is still under warranty so they will replace it the funny thing is I had same sensor changed in September has anybody else had this problem ??is this the norm??
Facelift Lamda sensor
- Thread starter r2113
- Start date
Unusual on a newer car using OE quality sensors. By "upstream" I assume they mean the pre-cat lambda - this sensor is important (once the engine warms up) in controlling the precise combustion mixture in conjunction with other sensors like the MAF sensor. Sometimes the combustion mixture further upstream can be so far wrong (because of something like a huge hole in a vacuum pipe) this lambda sensor will struggle to cope with corrective action out of its range and therefore, throw an error code. This can result in DIY mechanics wrongly assuming the sensor is faulty when something else is causing the problem.
If you have had this analysed professionally, I can only assume this sensor has been properly identified as the problem and that you have either suffered extremely bad luck or that it was not actually changed last September
If you have had this analysed professionally, I can only assume this sensor has been properly identified as the problem and that you have either suffered extremely bad luck or that it was not actually changed last September
I am a vehicle tech my self I did diagnostic code reading my self before I booked it in??i have all paper work and part is recorded in my Audi ,I thought the same never been changed 1st time or maybe just unluckyUnusual on a newer car using OE quality sensors. By "upstream" I assume they mean the pre-cat lambda - this sensor is important (once the engine warms up) in controlling the precise combustion mixture in conjunction with other sensors like the MAF sensor. Sometimes the combustion mixture further upstream can be so far wrong (because of something like a huge hole in a vacuum pipe) this lambda sensor will struggle to cope with corrective action out of its range and therefore, throw an error code. This can result in DIY mechanics wrongly assuming the sensor is faulty when something else is causing the problem.
If you have had this analysed professionally, I can only assume this sensor has been properly identified as the problem and that you have either suffered extremely bad luck or that it was not actually changed last September
- Joined
- May 8, 2017
- Messages
- 215
- Reaction score
- 167
- Points
- 43
Exactly the same here. Engine management light came on a few months ago.
Audi replaced the lamda sensor under warranty.
Then a few weeks ago it came on again (my carista app said it was fault P2196 O2 sensor signal biased/stuck Rich bank 1 Sensor 1.
No parts were replaced. They said something like 'have you been doing short journeys as they think too much fuel was in the cylinders and not getting burned off'.
Which wasn't the case. The first time it came on was at the start of a 200 mile journey.
They took it for a drive and drove around at 3000-4000rpm for 5-10 minutes apparently.
When I picked the car up the light was off
Audi replaced the lamda sensor under warranty.
Then a few weeks ago it came on again (my carista app said it was fault P2196 O2 sensor signal biased/stuck Rich bank 1 Sensor 1.
No parts were replaced. They said something like 'have you been doing short journeys as they think too much fuel was in the cylinders and not getting burned off'.
Which wasn't the case. The first time it came on was at the start of a 200 mile journey.
They took it for a drive and drove around at 3000-4000rpm for 5-10 minutes apparently.
When I picked the car up the light was off
On my 15 plate TT the Lamda sensor failed twice in 6 months, the tech told me was a common fail in that model of TT, before I got a engine management light I started noticing my idle revs were higher than usual.
- Joined
- Feb 9, 2016
- Messages
- 503
- Reaction score
- 651
- Points
- 93
Strange mix of diesels and petrol - sounds more like a large batch of faulty Audi sensors rather than a problem with any engine commonality 
This isn't new, untested technology, lambdas have been around for a few decades and some cars are still driving around with 20-year old sensors in their exhausts still working fine. 
This isn't new, untested technology, lambdas have been around for a few decades and some cars are still driving around with 20-year old sensors in their exhausts still working fine. Strange mix of diesels and petrol - sounds more like a large batch of faulty Audi sensors rather than a problem with any engine commonality
Nothing to do with emissions as car is euro 6 Not had cheat soft ware ??????
