Trouble code 45
intimidatordei
08-09-2005, 08:37 AM
My 1994 S-10 is showing trouble code 45 only after the truck is driven on the highway. The "service engine soon" light comes on only after I have driven over 65 MPH for several miles. The light shuts off after I slow to 35 MPH. I then check the computer and Trouble Code 45 comes up. Trouble Code 45 is-Oxygen sensor (O2S) circuit (rich exhaust indicated). Can anyone tell me what my be causing this condition to happen.
Thanks for any help provided.
Thanks for any help provided.
intimidatordei
08-09-2005, 08:42 AM
I'm sorry, this truck is a 1994 with a 4.3 Vortec with CPFI.
ctesla
08-17-2005, 12:02 AM
send me a pm, or email address, and I'll shoot you the GM
service page to troubleshoot 45
chris
nrt racing
service page to troubleshoot 45
chris
nrt racing
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