that DTC#19 is not 'nice'! The LH-SFI module (Menu#7) has reached the end of its 'self-adaptation' range, so the CEL come on. Of course, it could be a cracked or broken vacuum line and / or a malfunctioning injector but normally if you haven't been working on your car, it's due to "aging".

I can fix the problem with a new eprom for the LH-SFI module.

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Regards . . . . JimF
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'94 S500 Cpe

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