Code 45: Rich Exhaust Indication: Notes

WARNING: This page is about a different car, the 1990 Pontiac Firebird and 1990 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.

Code 45 is set when the oxygen sensor signal voltage on circuit No. 412 remains greater than .7 volt for at least 30 seconds in closed loop, engine is running for at least one minute and throttle angle is 3-45 percent.