Retrieving codes – Equus 3145 - Digital Ford Code Reader (1981 - 1995) User Manual
Page 59
Retrieving Codes
FAULT CODE DEFINITIONS FOR EEC-IV SYSTEMS (112 - 138)
Chapter 4
56
TEST
CODE
CONDITION
FAULT CODE DEFINITION
112
O, C
(Trucks ONLY): Air charge temperature
sensor below minimum voltage
113
O, C
Intake air charge temperature sensor above
maximum voltage / -40° indicated
114
O, R
Air charge temperature sensor higher or
lower than expected voltage
116
O, R
Engine coolant temperature higher or lower
than expected
117
O, C
Engine coolant temperature sensor below
minimum voltage / 254° F indicated
118
O, C
Engine coolant temperature sensor above
maximum voltage / 0 to -40° F indicated
121
O, R, C
Closed throttle voltage higher or lower than
expected
122
O, C
Throttle Position sensor below minimum
voltage
123
O, C
Throttle Position sensor above maximum
voltage
124
C
Throttle Position sensor voltage above
normal
125
C
Throttle Position sensor voltage below
normal
126
O, R, C
Manifold absolute pressure (MAP) or
barometric sensor (BARO) above or below
normal
126
C
Cylinder identification circuit failure
128
R
(Cars ONLY): Manifold absolute pressure
sensor failure/ vacuum hose disconnected or
damaged
128
C
(Trucks ONLY): Manifold absolute
pressure sensor / vacuum hose disconnected
or damaged
129
R
Insufficient Mass Air Flow (MAF) change
during dynamic response test
136
R
HEGO (HO2S) sensor fault, always lean
137
R
HEGO (HO2S) sensor fault, always rich
138
R
Cold start injector flow insufficient
4