Im getting error codes 4,1,12,43 in my 93 accord. I changed the oem headers to aftermarket ones along with the 02 censor and cleaned out the EGR valve. Yet the light still comes on, anyone know what to do?
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With that many codes, it MAY be a failing ECU. If you have access to another ECU, give that a shot.
What o2 sensor did you install? Bosch sensors are commonly sold at most stores, and the NEVER work properly.
Also, just because... you only have one header. Not "headers".
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Thanks Ill try a new ecu! Yeah header sorry lolComment
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Are you saying Bosh O2 sensors are not recommended on these cars?Originally posted by deevergote View PostComment
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I'm saying they don't work... so yes, I would say parts that don't work are not recommended.
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I would write down all your codes and reset the ecu by pulling your backup/radio fuse for about 10-15 seconds.
Take it for a short test drive at low rpm and high rpm (to do a vibration check) and see what codes you tripped.
Then start buying parts from there.
In my old car the knock sensors would trip the cel at high loads.
It would turn off and disappear once the car is restarted.Comment
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Depending on the order you went about your project, you could have caused those CEL's and as someone said, clear them by pulling 7.5amp radio backup fuse located in underhood fuse box near passenger shock tower area. Then, go for a drive and see if any CEL's persist.
FYI, not sure how you went about the EGR repair, but you have to keep certain components electronically connected not to trip CEL's. Not sure if you tried to do some EGR block-off project or whatnot.
Sidenote: Stick to Honda OEM oxygen sensors or NTK brand.Comment
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