Equus 3123 - GM Code Reader (1982 - 1995) - Manual (Page 22)

2
2-13 GM
CODE SERVICE CODE DEFINITION
82 Internal PCM communication fault (Saturn) or QDM
Solenoid "A" monitored voltage differs from commanded
Ignition system fault - 3X signal problem
83 Torque Converter Clutch (TCC) solenoid - circuit
problems
Reverse Inhibit - open or short circuit in reverse inhibit
solenoid
84 3-2 Control solenoid - open or short circuit problems
Skip shift solenoid - open or short circuit problems
85 Programmable Read Only Memory error or undefined
gear ratio (input or output sensor failure)
Torque converter clutch (TCC) - TCC is mechanically
stuck on
86 Analogue/Digital Electronic Control Module (ECM)
error or shift Solenoid "B" stuck on
87 Electrically Erasable Programmable Read Only Memory
(EEPROM) error or shift Solenoid "B" stuck off or high
gear ratio error
88 Electronic Control Module (ECM) computer circuit fault
89 Power Management fault
90 TCC error
91 Skip shift light - open or short circuit problems in skip
shift light circuit
93 Pressure control solenoid - transmission line pressure
not at desired level
95 Change oil light - wrong voltage is present in light
circuit for more than 26 seconds
96 Transmission voltage low - low system voltage possibly
caused by generator voltage supply circuit or power
train control module
Low oil light - wrong voltage is present in light circuit
for more than 26 seconds
97 Vehicle speed sensor (VSS) - output circuit problems
99 Tachometer output circuit problems