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[Johnny English]

Hi all,
my iron suffers with misfiring (or something that sounds like this) in lpg, in normal way she hesitates before accelerating. The paperclip test gave the next:
 
  89 - O2 sensor2 open circuit
  38 - O2 sensor1 low voltage
  74 - MAF sensor high voltage

After a brief buggering I found that "voltage low" or "voltage high" massage doesn't mean necessarily the faulty of sensor. The MAF high voltage supposedly means any false air sucking somewhere if I understood well the theory of V6 engine...I have a question though : how can I identify sensors eg sensor1 sensor2? My suspection is to follow the order of cylinders namely 1-3-5 bank would be the circle No.1 (driver's side me and passanger's side you) so I can find sensor1 there and the 2-4-6 bank would be the circle No.2 that's the place of sensor2...or am I wrong?    Any advice please!       Thx                 Laszlo

[TheBoy]

Bank 1 is bank of cylinders 1/3/5
Bank 2 is cylinders 2/4/6

Pre DBW V6 have 2 sensors, one per bank, so Bank 1 Sensor 1 (B1S1) and Bank 2 Sensor 1 (B2S1)
OBDII compliant engines have 2 sensors per bank, one pre starting cat (Sensor 1), one post starting cat (Sensor 2), giving on Bank 1:
B1S1 and B1S2
and on Bank 2:
B2S1 and B2S2

[Andy H]

I think you are correct in thinking that bank 1 = 1/3/5 and bank 2 = 2/4/6.

If my memory is correct then cylinder 1 is nearest the air filter (which would make bank 1 our drivers side / your passenger side)

[Johnny English]

Thank you guys for quick response!