I have a 1990 300ce, for the last 2 years the code comes up 17.
O2 related, ground mod in place, new O2 installed, will check the new O2 this week.

My "Check Engine" light comes on only after I "Kick it in the butt", hit 7000 rpm in 1st, slam into 2nd, go to third, and slow......cruse to wherever, stop, restart, "Bam Red Light".........code 17.

We have cleared the computer, and after a few months of "No Light" I pounded the throttle again........Pa Pow code 17!

Never a driveabialty problem......

????

Thank's,

Tim

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Tim
300CE
280SE 4.5
Sandals (size 11)