I have 2000 Toyota Sienna, LE with 3.0L 1MZ-FE engine. Lately, I get intermittent DTC P1130 & P1150. I understood these DTC are for Air Fuel Ration Bank1 Sensor1 (B1S1) and Bank2 Sensor1 (B2S1). I measured resistance on B1S1 at room temperature and it is 1.2ohm which I understand is within the rage. Since B2S1 is near firewall, I am not able to measure the resistance. These sensors are never replaced.
The van runs fine not problem. My questis are:
(1) Is it possible that the bit sensors are not completely bad but they are on their way out hence the DTCs are intermitatnt. I get MIL then it goes away. Then it comes back after few days.
(2) Is it possible for botn sensor to go bad at the same time.
have the same problem?
Monday, March 25th, 2013 AT 3:42 PM