o2 sensors

Just installed Supersprint manifolds and sport cats on 01 e39 M5. Initially SES light came on and several fault codes were generated. After two test drives, the SES light has not returned, but two fault codes have: Catalytic converter conversion bank 1 and bank 2. The vehicle is essentially...

BMW E39 M5 / S62 V8 Does anyone know what could cause for MAF and O2 (Bank #1 & #2) sensors to go out frequently? I put brand new OEM BMW (BOSCH) Mass Air Flow Metter sensors, brand new OEM BMW (BOSCH) Oxygen sensors (Bank #1, #2, #3, #4) in May 2016 – 137K miles. It’s been a little over a...

First of all...new member here...from Spain so...sorry for my English level¡¡ I´ve been reading this board for a while...I always loved the E39 M5 but here in my country It´s not easy to find a good unit... Last year I had the chance to buy a good one (06/2000) right now with 125.000 miles on...