ecu codes 41 71 and 72
10-21-2003, 09:12 AM
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why would i have number 1 and 2 cyl misfire? it runs fine and has good power, how do i reset the ecu on an obd2 car? i tok out the 15amp fuse and nothing they are still there, can it be the spark plugs?
10-21-2003, 09:13 AM
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Re: (jetpilot)
np...hope I didn't **** you off with that picture...most people get offended 
Keep that link bookmarked, thats why it was so quick.
41 is 02 sensor, 71 and 72 are cylinder 1 and 2 misfires. 02 sensor is bad or not plugged in right, not sure about cylinder misfires, could be due to shitty spark plugs??? Anyone else have any ideas?
And the red 7.5 amp backup fuse is the one for the ECU
Keep that link bookmarked, thats why it was so quick.
41 is 02 sensor, 71 and 72 are cylinder 1 and 2 misfires. 02 sensor is bad or not plugged in right, not sure about cylinder misfires, could be due to shitty spark plugs??? Anyone else have any ideas?
And the red 7.5 amp backup fuse is the one for the ECU
10-21-2003, 09:29 AM
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thanks
Im going to change the spark plugs and reset the ecu, hope it doesnt come on again (except for the O2 bu I dont care about that code)
Im going to change the spark plugs and reset the ecu, hope it doesnt come on again (except for the O2 bu I dont care about that code)
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10-21-2003, 09:32 AM
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Re: ecu codes 41 71 and 72 (jetpilot)
41= Primary O2 Pre-heater which pretty much means you need a new O2.
71, 72= Misfires Cyl 1&2 which might by caused by the shitty o2 running a shitty A/F ratio, but it could also be your plugs. But code 41 will make your car idle like dog ****, I know, I just took care of that problem on my car!
71, 72= Misfires Cyl 1&2 which might by caused by the shitty o2 running a shitty A/F ratio, but it could also be your plugs. But code 41 will make your car idle like dog ****, I know, I just took care of that problem on my car!
10-21-2003, 09:34 AM
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Re: (jetpilot)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jetpilot »</TD></TR><TR><TD CLASS="quote">thanks
Im going to change the spark plugs and reset the ecu, hope it doesnt come on again (except for the O2 bu I dont care about that code)</TD></TR></TABLE>
Not a good idea my friend. Take care of that O2 problem, your car will run like **** without it. You can find them on H-T for about $50-$60 shipped, but from Honda they're like $200+.
Im going to change the spark plugs and reset the ecu, hope it doesnt come on again (except for the O2 bu I dont care about that code)</TD></TR></TABLE>
Not a good idea my friend. Take care of that O2 problem, your car will run like **** without it. You can find them on H-T for about $50-$60 shipped, but from Honda they're like $200+.
10-21-2003, 09:45 AM
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on my 92 si hatch I have code 41 and it idles and runs very nice, no problems at all, on the ek Im talking about (a friends) it does idle kinda shitty but as it has no tach im not sure at what rpms and i dont want to fiddle with the idle screw and iacv because then I cant set it back to stock idle. Ohh and the secondary O2 sensor is gone as it has a dc header that displaces the top mount cat
10-21-2003, 09:56 AM
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Re: (jetpilot)
Interesting. Well on my cluster my idle would go as low as 100-150 rpm, maybe even less. Don't know about you but I like to keep my car in perfect working order hence my suggestion to take care of it. 
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