on my SL320 sensor 2 was before the catalytic converter, sensor 1 is after.
Did not make any sense to me
> on a 1999 e320 could someone please tell me where to locate bank 1 sensor
> 2?? It gave me a code 141 and I'm wondering if that sensor could have been
> the cause of 1 years worth of code 170 and 173's??
> Thankyou for the help in advance
> mike