Yes.
A 2002 Chrysler Town and Country has two oxygen sensors.
Passenger side is bank one on a LHS.
Mitsubishi Galant, 2002, 4-cyl, O2 sensor, bank 1 sensor 1 (upstream)... PART NUMBER: MR506364
There is no bank two on this van.
Bank 1 is the pass side.
This is a generic O2 Sensor code, usually used on right bank
* P0141 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2) The after catalyst O2 sensor has failed.
P0155 = O2 sensor heater circuit malfunction (Bank 2 Sensor 1). All O2 sensors are threaded into the exhaust system at various points. Bank 2 would be the bank of cylinders that does not contain the #1 cylinder. Bank 2 Sensor 1 would be the first O2 sensor leading from bank 2 of the engine.
Bank one is the same side as cylinder number one. Sensor one is upstream or before the catalytic converter.
Bank 1 Sensor 2 is the sensor AFTER the catalytic converter. Causes could be,A faulty O2 sensor, Exhaust leak near the sensor, Damaged catalytic converter, Damaged wiring to O2 sensor,
Bank 1 sensor 1 is screwed into the exhaust manifold on the back of the engine. Bank 1 sensor 2 is screwed into the catalytic converter.Bank 1 sensor 1 is screwed into the exhaust manifold on the back of the engine. Bank 1 sensor 2 is screwed into the catalytic converter.