Location of code P0154 bank sensor 1 sensor 1 on mitsubishi montero sport 3.0

SOURCE: I have 2002 mitsubishi montero sport 3.5L with a

replace the o2 sensor the one before the cat converter with a quailty sensor like a denso brand o2 sensor

Stephen

• 21873 Answers
• Posted on Sep 18, 2012

SOURCE: P0154 Trouble Code on my 2002 Mitsubishi Montero Sport. Where exactly is the bad 02 sensor? There are four of them and I don't know which one is the Bank 2 #1 sensor.

Bank 2 is the side of the engine with cylinder number 2, and sensor one is the sensor in front of the catalytic converter.
Please know that the code does not mean the sensor is bad, only that the reading the computer is getting is constantly lower than .3 volts.
The sensor could be faulty, or there could be a problem with the fuel injectors or the wiring harness to the sensor.
When the sensor is working correctly, the reading should switch back and forth between .3 and 1.0 volts.