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Error codes 850 1994

posted by  KlausC on  Tue Sep 27 09:53 CST 2011
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

You got a blinking shift up arrow?

121 Solenoid S1 short circuit to ground or control module fault
122 Solenoid S1 open circuit
123 Solenoid STH short circuit to battery voltage
124 Mode selector faulty or short circuit to ground
131 Solenoid STH open/short circuit or control module fault

The solenoids use ATF to control pressure and change gears within the transmission. Because both of your faults are for short circuit/ground faults, follow the wires and look for problems.
Clear both codes and see if they come back in a hurry.

Klaus
--
Did you do your Random Act of Kindness today?






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