DIY PGMFI Diagnostics - Code 41 PO2H

you can fit aftermarket sensors, as long as they are compatible ( heater resistance )

NGK is a better option than Bosch

ECU-MAN you are the bomb.
Ur a super start of this forum ^^ <3 ur write ups.
However my car isnt that good.
I think im popen code 1 and 41. And i will test and possably replace soon.
However I dont think I will get to if for afew days.
What will be the repercussions of me driving it with a bung sensor. Will my car just run too rich or to lean? Will it cause any damage?

thanks you

if the engine light comes on ( whict it will with out the heater ) the ECU will richen up the mixture to protect the engine.

if your getting code 1 and 41, then there is a possibility your O2 is just unplugged or not firmly connected.


its rare for the heater as well as the O2 to fail together within the HO2, or you O2 is really rooted.

well i redid the test. Just got the 41 code this time :P
Armed with a new universal 4 wire sensor ( $122 from repco, was in a 'champion' box), my mulimeter and a print out of ur Diagnostics. I was going to test and then install a new sensor.

However on close inspection ( after however trying to unplug it one handed in the dark ) i noticed one of the four wires were pretty much pulled out of the connector. The wire having a nice little Lug/connector on it.
I duno if it was out that much be4 or i pulled it down myself. BUT after sticking the wire back in the connector.I didnt have the warning light :D

Looks like im getting the 122 bucks back woohooo

remember kids. Allways have a very good inspection WITH A TOURCH be4 you doing anything :P

peace out

good work,

alot of times ( backyarders ) damage the wiring when they remove the oil filter when tools get jammed on the O2 wires, 1 can get pulled out like in your case.