What the hell refers the PCM code number 72? I can´t find the corresponding failure.

Manuel Obregon
Managua, Nicaragua
obregonmanuel@yahoo.com

Have you gutted your cat by any chance?

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'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
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Factory Service Manuals: http://nawdu.de/files/

catalytic converter efficiency(sp) failure. i had the same code and replaced mine, just passed emissions with it too.

ttyl

Matt
Exile Racing Technologies

So mine finally figured out I have no cat. It took my car 4-5 months to figure it out...My car is dumb..LoL

Dave
05 Ford F150 SuperCrew FX4

It's not telling you that you don't have a cat. It's telling you that your oxygen sensor in bank one (upstream) is bad. I had that 72 code with no cat then I changed the O2 sensor and now it's gone. Just replace the sensor.

^^ not necessarily, it could be the downstream one also, if the second doesnt agree with the first you will get the cat error.
if you dont have a cat you should do this http://www2.cesa12.k12.wi.us/brent/personal/neon/pic/cat_resistor.html

1998 dodge avenger 4 cyl AT
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