Operation and maintenance manual

3-28
DDEC IV DIAGNOSTIC CODES
DDEC Code #
(Flashed) PID SID FMI DDEC Description
67 109 - 4 Coolant pressure sensor input voltage low
67 106 - 3 Air inlet pressure sensor input voltage high
67 106 - 4 Air inlet pressure sensor input voltage low
67 20 - 3 High range coolant pressure sensor input voltage high
67 20 - 4 High range coolant pressure sensor input voltage low
68 - 230 6 TPS idle validation circuit fault (short to ground)
68 - 230 5 TPS idle validation circuit fault (open circuit)
71 - xxx 1 Injector xxx response time short
72 84 - 0 Vehicle overspeed
72 84 - 11 Vehicle overspeed (absolute)
72 - 65 0 Oxygen content too high
72 - 65 1 Oxygen content too low
73 - 151 14 ESS transmission stuck in gear
73 - 226 11 Transmission neutral switch failure (ESS Transmission)
73 - 227 2 Aux. analog input data erratic, intermittent, or incorrect (ESS
transmission)
73 - 227 3 Aux. analog input #1 voltage high (ESS transmission)
73 - 77 0 Gas valve position above normal range
73 - 77 1 Gas valve position below normal range
73 - 77 3 Gas valve position input voltage high
73 - 77 4 Gas valve position input voltage low
73 - 77 7 Gas metering valve not responding
73 107 - 0 Air filter restriction high
74 99 - 0 Oil filter restriction high
74 70 - 4 Optimized idle safety loop short to ground
75 168 - 0 ECM battery voltage high
75 - 232 0 Sensor supply voltage high
76 121 - 0 Engine overspeed with engine brake
81 - 20 3 Timing actuator (dual fuel) input voltage high