Cadillac Repair: 91 Cadillac Deville Codes, cadillac deville, switch problem

Question
Can you please tell me what E91. E.7 E52 mean?

Thanks

Answer
E91 = PRNDL switch problem.

E7 = No such code.  If your code is E70 = a fault in the THROTTLE POSITIONING SWITCH (TPS).

E52 = Battery voltage was disconnected to the computer. You most likely disconnected the battery.

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