From: positivebalance41m on 29 Aug 2006 21:12
getting a code P0155 error
does n e 1 know the physical location of this particular sensor and can
give some tips how to access/change the sensor?
From: Ray O on 30 Aug 2006 00:48
<positivebalance41m(a)yahoo.com> wrote in message
> getting a code P0155 error
> does n e 1 know the physical location of this particular sensor and can
> give some tips how to access/change the sensor?
P0155 indicated a problem with the heater circuit of O2 sensor #1 for Bank
O2 sensor #1 is located in the exhaust manifold; O2 sensor #2 is located
after the catalytic converter.
Bank 1 is always the cylinder bank with cylinder #1 so Bank 2 is the
So, in the case of your Sienna, O2 sensor #1 for Bank 2 is located in the
exhaust manifold closest to the front of the car, away from the passenger
compartment. To access O2 sensor #1 for Bank 2, open the hood and look down
at the front exhaust manifold for a cylindrical object with wires coming out
the end. To change it, unplug the wires, unscrew the sensor, reverse the
(correct punctuation to reply)