[bcball]

I have 2 codes on my 98 DI p0130 o2 sensor circuit (Bank 1 Sensor1) and P0150 O2 sensor circuit (Bank 2 Sensor 1). Does anyone know which side is Bank 1 and which sensor is forward and which is rear??

 

[son of lucas]

Bank one is drivers side..bank 2 is passenger side
sensor 1 is the 1st sensor in the exhaust stream..in other words..the closest to the engine/ also known as pre-catalyst
sensor 2 is post catalyst sensor..in other words, the one after(or behind) the cat
(i hope your in the u.s.a) this info may not be accurate for other applications

 

[bcball]

Canada
Thanks for the info!