Thread: Trouble code 45
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Old 08-09-2005, 08:37 AM
intimidatordei intimidatordei is offline
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Trouble code 45
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.
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