1989 190 E 2.6 engine light comes on and stays on. Just had the resistor on the alternator replaced by a local shop. They are closed for the weekend, Is there something that I can do now to fix it?
Thanks, Mark

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Mark Harnden

On a USA version ONLY the O2 sensor can cause that.

ON a California version there are many items that can turn on the lamp.

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
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44 years foreign automotive repair
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MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

Thank you I will check it.
Mark

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Mark Harnden