got CEL code 43 today.

civicex · Post by **civicex** » Tue Jul 19, 2011 11:13 pm

i have a 94 ej1 and today i got that i looked it up got fuel system supply i just got a new fuel pump like 2 weeks ago and it's running fine and all but, i don't know what all to check any ideas?

JustRob · Post by **JustRob** » Tue Jul 19, 2011 11:57 pm

Reset the ECU. Start the engine and let it warm up until the radiator fan comes on. Jump the service check connector and hold the engine at 3,000 RPM for about 2 minutes. Does the check engine light come on again indicating code 43?

civicex · Post by **civicex** » Wed Jul 20, 2011 12:55 am

JustRob;269807 wrote:Reset the ECU. Start the engine and let it warm up until the radiator fan comes on. Jump the service check connector and hold the engine at 3,000 RPM for about 2 minutes. Does the check engine light come on again indicating code 43?

the cel didn't come on. it did it to me the other day and went off it seems to only come on whenever i drive on the highway for like 15-20 miles.

JustRob · Post by **JustRob** » Wed Jul 20, 2011 1:10 am

civicex;269813 wrote:the cel didn't come on. it did it to me the other day and went off it seems to only come on whenever i drive on the highway for like 15-20 miles.

Check for any loose connectors at the O2 sensor plug, the plugs located at the right shock tower and at the ECU. If they all look good, test drive it and see if it comes back.

civicex · Post by **civicex** » Wed Jul 20, 2011 1:42 am

JustRob;269819 wrote:Check for any loose connectors at the O2 sensor plug, the plugs located at the right shock tower and at the ECU. If they all look good, test drive it and see if it comes back.

i'll let ya know in the morning before i got to work thanks for the help.

civicex · Post by **civicex** » Wed Jul 20, 2011 12:54 pm

civicex;269831 wrote:i'll let ya know in the morning before i got to work thanks for the help.

I was on my way yo work cel came back on and threw same code. would the cel come on from clogged injecters?

Post by **stolle** » Wed Jul 20, 2011 1:47 pm

i would say its a bad o2 sensor.

JustRob · Post by **JustRob** » Wed Jul 20, 2011 5:38 pm

civicex;269880 wrote:I was on my way yo work cel came back on and threw same code. would the cel come on from clogged injecters?

No. Like stolle said, it's most likely an O2 sensor.

91beatuphatch · Post by **91beatuphatch** » Wed Jul 20, 2011 11:29 pm

my old da had the same problem. replace o2 first if that doesnt fix it then theres other things to look at.

civicex · Post by **civicex** » Thu Jul 21, 2011 1:31 am

91beatuphatch;269962 wrote:my old da had the same problem. replace o2 first if that doesnt fix it then theres other things to look at.

thanks guys i'll see if that's the issue when i can. then i'll let you all know.