If you are going into limp home mode then your car has ASR, which means that the Electronic Throttle Actuator (ETA) controls three things: Cruise Control, Engine Acceleration and Idle Speed Control. Have you checked the date stamp on your ETA? The ETA's are also built with the same bad wiring insulation as the engine harnesses and tend to go bad over time. If it is original, it could very well have failed.



The max temp in module box is something that happens on most of these cars when it gets really hot. I think you are safe to ignore that code, like most of us do.


Have you checked the Delco 10A fuses in the module box?

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1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles