Download GM CODE READER 1.6

2
2.5.1 GM Engine/Electronic Transmission Service Codes; Saturn
Engine Service Codes
CODE
SERVICE CODE DEFINITION
11
(Saturn vehicles ONLY): Indicates transmission service
codes will be displayed next on the "Shift to D2" light
(1991-92 models) or "Temperature" indicator light (1993
and later models)
12
Diagnostic mode; no distributor signal to Electronic
Control Module; System PASS
13
Oxygen sensor signal fault - signal too low / open left
oxygen sensor circuit (Dual sensor models)
14
Coolant sensor or circuit fault - signal voltage low or
shorted
15
Coolant temperature sensor or circuit fault - signal
voltage high
16
Battery or alternator problem - voltage too high or low
Direct ignition system (DIS) fault line open or shorted to
ground
Ignition system fault - loss of 2X or Low Resolution
Pulse signal
Transmission speed error
17
RPM signal problem
Camshaft sensor - circuit problems
Electronic Control Module (ECM) computer circuit
problem - Pull-up resistor (Saturn)
18
Camshaft or Crankshaft sensor - circuit problems
Fuel Injector circuit is not working properly - possible
blown fuel injector fuse
19
Ignition system fault - Intermittent 7X signal or loss of
58X signal or 6X signal (Saturn)
21
Throttle position sensor (TPS) - signal voltage is high
22
Throttle position sensor (TPS) - signal voltage is low
Fuel cutoff relay circuit - open or shorted to ground
23
Manifold air temperature (MAT) sensor - signal voltage
is low or high
Throttle position sensor (TPS) error
Mixture Control (M/C) solenoid - open or short circuit
problems
Intake Air Temperature Sensor (IAT) low
2-7
GM