wiring harness (w/h), count your blessings! Since they all degrade, you are living on borrowed time.

But the DTC#19 does not normally involve the w/h. If the #19 problem is "real", the CEL will come back.

You can 'test' to see what's going on: If you have access to a "pro" scanner, then the self-adaption (s/a) can be read using the live-data feature in the scanner. The current state of the s/a can be read it and that will tell you whether the CEL was 'real' or not.

The present limits are +/-15% from nominal (which is "1"). So if you have it read, then let me know. If it's close to 0.85 (the lower limit), then the DTC#19 is "real"!

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Regards . . . . JimF
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'94 S500 Cpe

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