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Engine code 413 on port 6 & code 121 on port 2 200 1991

posted by  hobbit on  Fri Mar 15 02:10 CST 2002
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Hello all,
It has been a while since my last post. I had code 121 on port 2 show up a few times this winter. The contacts on the wiring harness to the Air flow metering device is corroded as well as the contacts on the device itself. I cleaned them with contact cleaner and that works for a couple of months. Perfromance does not appear to change when the check engine light comes on, so I assume it is a momentary contact failure. Any suggestions for a long term solution to contact corrosion?
What is new is this code 413 on the other place you can plug in the diagnostic wire; port 6. Does anyone know what the other port is for and what the code means?

Thanks in advance,
Steven Manseau
Billerica, MA






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