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Service Code Definitions

SERVICE CODE DEFINITIONS

Service Code Test Condition(s) Definition
11 KOEO/KOER/ CONTINUOUS System Pass
12 KOER Unable to control RPM during Self-Test high RPM check
13 KOER Unable to control RPM during Self-Test low RPM check
14
7.3L Diesel CONTINUOUS Engine RPM Sensor ckt failure
All Others CONTINUOUS PIP ckt failure
15 KOEO ECA Read Only Memory (ROM) Test Failed
15 CONTINUOUS ECA Keep Alive Memory (KAM) Test Failed
16 KOEO IDM signal not received
18
2.3L KOER SPOUT ckt open
2.3L CONTINUOUS Erratic IDM input to processor
4.0L KOER SAW ckt failure
4.0L CONTINUOUS Loss of IDM input to processor/IDM ckt failure
All Others KOER SPOUT ckt open
All Others CONTINUOUS Loss of IDM input to processor/SPOUT ckt grounded
19 KOEO Failure in ECA internal voltage
21 KOER/KOEO ECT sensor out of Self-Test Range
22 KOEO/KOER/ CONTINUOUS MAP/BP sensor input is out of Self-Test Range
23
7.3L Diesel KOEO/KOER Fuel Injection Pump Lever (FIPL) ckt is out of Self-Test Range
All Others KOEO/KOER TP sensor input is out of Self-Test Range
24 KOER/KOEO ACT sensor input is out of Self-Test Range
25 KOER Knock not sensed during Dynamic Response Test
26
2.9L/4.0L KOEO/KOER MAF sensor is out of Self-Test range
All Others KOEO/KOER Transmission Oil Temperature (TOT) Sensor out of Self-Test range
28 CONTINUOUS Loss of IDM - Right Side
29 CONTINUOUS Insufficient input from VSS
31 KOEO/KOER/ CONTINUOUS EVP ckt below minimum voltage
32 KOEO/KOER/ CONTINUOUS EVP voltage below closed limit
33 KOER/CONTINUOUS EGR valve opening not detected
34 KOEO/KOER/ CONTINUOUS EVP voltage above closed limit
35 KOEO/KOER/ CONTINUOUS EVP ckt above maximum voltage
39 CONTINUOUS AXOD lock-up failed
41 KOER HEGO sensor ckt indicates lean
41 CONTINUOUS No HEGO switching detected
42 KOER/CONTINUOUS HEGO sensor ckt indicates rich
44 KOER Thermactor air system inoperative
45
4.0L CONTINUOUS Coil 1, 2 or 3 failure
All Others CONTINUOUS Thermactor air upstream during Self-Test
46 KOER Thermactor air not bypassed during Self-Test
47 KOEO 4X4 switch is closed (E4OD)
48 CONTINUOUS Loss of IDM - Left Side
49 CONTINUOUS 1-2 shift error (E4OD)
51 KOEO/CONTINUOUS ECT indicated -40°F/sensor ckt open
52 KOEO PSPS ckt is always open
52 KOER PSPS ckt did not change states
53
7.3L Diesel KOEO/CONTINUOUS Fuel Inj. Pump Lever (FIPL) ckt is greater than maximum voltage
All Others KOEO/CONTINUOUS TP sensor input is greater than maximum voltage
54 KOEO/CONTINUOUS ACT sensor -40°F ckt open
56
2.9L/4.0L KOEO/CONTINUOUS MAF ckt above maximum voltage
All Others KOEO/CONTINUOUS Transmission Oil Temperature (TOT) indicated -40°F ckt open (E4OD)
57 CONTINUOUS AXOD Neutral Pressure Switch (NPS) ckt failed open
59 CONTINUOUS 2-3 shift error (E4OD)
61 KOEO/CONTINUOUS ECT indicated 254°F ckt grounded
62 CONTINUOUS Converter Clutch error (E4OD)
63
7.3L Diesel KOEO/CONTINUOUS Fuel Inj. Pump Lever (FIPL) ckt is below minimum voltage
All Others KOEO/CONTINUOUS TP sensor input is less than minimum voltage
64 KOEO/CONTINUOUS ACT indicated 254°F ckt grounded
65 KOER Overdrive Cancel Switch (OCS) not changing state (E4OD)
66
2.9L/4.0L KOEO/CONTINUOUS MAF ckt below minimum voltage
All Others KOEO/CONTINUOUS Transmission Oil Temperature (TOT) indicated 290°F ckt grounded (E4OD)
67
All Models KOEO Neutral Drive Switch (NDS) ckt open; A/C on
All Others CONTINUOUS Manual Lever Position (MLP) is out of range; A/C on (E4OD)
2.9/4.0L CONTINUOUS Clutch switch ckt failure
69 CONTINUOUS 3-4 shift error (E4OD)
72 KOER Insufficient MAF or MAP change during Dynamic Response Test
73 KOER Insufficient throttle position (TP) change during Dynamic Response Test
74 KOER Brake ON/OFF (BOO) switch ckt failure (not activated during Self-Test)
77 KOER Operator error during Dynamic Response/Cylinder Balance tests
79 KOEO A/C On/Defrost on during Self-Test
81 KOEO Air Management 2 (AM2) ckt failure
82 KOEO Air Management 1 (AM1) Ckt failure
84 KOEO EGR Vacuum Regulator (EVR) ckt failure
85 KOEO Canister Purge (CANP) ckt failure
86 KOEO Shift Solenoid (SS) ckt failure
87 KOEO/CONTINUOUS Primary Fuel Pump ckt failure
88 KOEO Loss of Dual Plug input control
89 KOEO Converter Clutch Override (CCO) ckt failure
91 KOEO Shift Solenoid 1 (SS1) ckt failure (E4OD)
92 KOEO Shift Solenoid 2 (SS2) ckt failure (E4OD)
93 KOEO Coast Clutch Solenoid (CCS) ckt failure (E4OD)
94 KOEO Converter Clutch Control (CCC) solenoid ckt failure (E4OD)
95 KOEO/CONTINUOUS Fuel pump ckt open; ECA to motor ground
96 KOEO/CONTINUOUS Fuel pump ckt open; Battery to ECA
97 KOEO Overdrive Cancel Light (OCIL)
98 KOEO Electronic Pressure Control (EPC) driver open in ECA (E4OD)
98 KOER Hard fault is present
99 KOEO/CONTINUOUS Electronic Pressure Control (EPC) ckt failure (E4OD)
NO CODES ... Unable to initiate Self-Test or unable to output Self-Test codes
CODES NOT LISTED ... Service codes displayed are not applicable to vehicle being tested