Check engine light P2198 P114d

[aarsavage]

Few days after one year of faultless ownership I've got some codes, hoping its a sensor which I can fit myself but not certain.

Code P2198 O2 Sensor Signal Biased/Stuck Rich (Bank 2 Sensor 1)
Code P114d?

In DIS I get:

a lot of "fault not currently present" which I don't understand.

For the first it tells me to check the lines and plug connections on lambda before cat bank 2 and if the fault isn't rectified to replace the sensor.

On the second fault it tells me: voltage outside tolerance range. Wiring defective, leak in exhaust system, oxygen sensors (bank 2) defective.

For the air pump it lists all these possible causes for the fault:
Air pump relay defective, air pump defective, air valve does not fully open, restriction in intake hose, leak in secondary air system.

The air pump starts up fine I'm wondering if the valve could be defective and leaking air into the system?

Would fitting a new lambda be the first thing to do? Reading pHilli0's recent thread, same code (P114d) which turned out to be a leak in the exhaust which has made me reluctant to throw money on a sensor straight away.

Does the live data point to anything specific? https://www.youtube.com/watch?v=lW4-0X6ylLs

Thanks in advance!

 

[srhutch]

Do you have an EML light on?

If not these could be old, and just not cleared. If it on I'd reset and see if it comes back. O2 sensors are easily triggered on these, especially with a change of fuel brand/grade.

 

[aarsavage]

Yeah, I cleared it with INPA, and it came back after a 10 minute drive.

I may not have cleared the air pump fault, so that one could be old.

Same fuel as always (Shell vpower) so that couldn't have set it off.

 

[Argenta]

I think that's what i got last year.
What airfilter have you got?
Tried cleaning the airmassmeter and renew the airfilter (OEM dry paper)..?

 

[pHilli0]

Few days after one year of faultless ownership I've got some codes, hoping its a sensor which I can fit myself but not certain.

Code P2198 O2 Sensor Signal Biased/Stuck Rich (Bank 2 Sensor 1)
Code P114d?

In DIS I get:

a lot of "fault not currently present" which I don't understand.

For the first it tells me to check the lines and plug connections on lambda before cat bank 2 and if the fault isn't rectified to replace the sensor.

On the second fault it tells me: voltage outside tolerance range. Wiring defective, leak in exhaust system, oxygen sensors (bank 2) defective.

For the air pump it lists all these possible causes for the fault:
Air pump relay defective, air pump defective, air valve does not fully open, restriction in intake hose, leak in secondary air system.

The air pump starts up fine I'm wondering if the valve could be defective and leaking air into the system?

Would fitting a new lambda be the first thing to do? Reading pHilli0's recent thread, same code (P114d) which turned out to be a leak in the exhaust which has made me reluctant to throw money on a sensor straight away.

Does the live data point to anything specific? https://www.youtube.com/watch?v=lW4-0X6ylLs

Thanks in advance!

Quick update. I had 2 p114d codes. One pre cat and one post cat. The pre cat problem has gone after vac leak has been fixed. The post cat code came back a few days ago. So no clear picture yet. Be interested in your troubleshooting this issue. My post cat sensors seem to be doing something according to inpa. The issue never appears when the car is driving along only when engine running but stantionary for about 15 mins.

 

[aarsavage]

Update,

I cleaned the Maf and the code returned.

Took it to bmw in the end and they replaced the pre-cat and post-cat lambda on bank 2.

All good now.