ecu codes

[Mp5Bob]

help anyone i put on the diagonis computer and i received p0421 and p0171 i elimainated my cat can that be the problem.(ughdance)

 

[i12drivemyMP5]

Do a search on DTC Codes

 

[Tengo]

p0421 - Warm Up Catalyst Efficiency Below Threshold (Bank 1), p0171 System Too Lean (Bank 1) / http://www.iequus.com/obd_def.asp

 

[Captain KRM P5]

did you eliminate one or both cats?

 

[TheMAN]

durrrrrrrr....... I took s*** off and I got a check engine light........... durrrrrrrrrrrrrrrrrrr

 

[Tengo]

ive been having one for months, its my speed sensor, need a new one.

 

[petersmp5]

he eliminated the the one that connects to the exaust manifold