1999 Chevrolet Astro Repair Question
Asked on June 7, 2012
What do i do when the code reads P0155?
I have a 99 Chevy astro cargo van. The code reads P0155 - oxygen sensor heater, bank 2 sensor 1. Do I replace the sensor or is there a hidden issue that I need to take care of?
Asked by richsar86Answer
Replied on June 7, 2012
you need to verify powers and grounds to the o2 first. then you measure the resistance across the heater portion of the sensor and make sure it is within specs.
Roy
Replied on June 7, 2012
I'm not a mechanic so how do I do that? Can you tell me step by step ?
Replied on June 7, 2012
if you are not familiar with thw system and how it works, get some help as you need an ohm meter and a voltmeter, a wiring diagram and be able to acess the connector.
Roy