MULTIQUIP MAYCO Series Operation Manual page 62

Table 7. GCP ECU Fault Code List for ZPP 416 Engine (continued)
NO. FAULT DESCRIPTION
78 Gasoline fuel pump relay control wire short to 12 V
79 Pin 85 (AUX_PWM4) open/short to GND
80 5V Reference #1 voltage low
81 5V reference #1 voltage high
82 MIL control ground short
83 MIL control short to power
84 Malfunction Indicator Lamp open
85 5V Reference #2 voltage low
86 5V Reference #2 voltage high
87 Power relay coil open
88 Power relay short to GND
89 Power relay short to 12V
90 Secondary fuel pressure low
91 Secondary fuel pressure high
92 NG Closed-loop: A/F is too lean
93 NG Closed-loop: A/F is too rich
94 LPG Adaptive-learn: A/F is too lean
95 LPG Adaptive-learn: A/F is too rich
96 NG Adaptive-learn: A/F is too lean
97 NG Adaptive-learn: A/F is too rich
98 EPR delivery pressure higher than expected
99 EPR delivery pressure lower than expected
100 EPR-ECU communications lost
101 EPR voltage supply high
102 EPR voltage supply low
103 EPR internal actuator fault detected
104 EPR internal circuitry fault detected
105 EPR internal communications fault detected
106 EPR secondary pressure higher than expected
107 EPR secondary pressure lower than expected
108 EPR secondary comm lost
109 EPR secondary voltage supply high
110 EPR secondary voltage supply low
111 EPR secondary internal actuator fault
112 EPR secondary internal circuitry fault
113 EPR secondary internal comm fault
114 Spark Plug or Coil Failure
115 AUX 5V ANALOG INPUT 4 open or high
116 AUX 5V ANALOG INPUT 4 low
PAGE 62 — MAYCO C30HDGA CONCRETE PUMP • OPERATION MANUAL — REV. #1 (09/09/19)
ENGINE FAULT CODES ENGINE FAULT CODES
TURNS ON MIL? MIL FLASH CODE
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
629
637
642
643
644
645
651
652
653
685
686
687
1087
1088
153
159
161
162
163
164
371
372
173
174
175
176
177
178
1271
1272
1273
1274
1275
1276
1277
1278
1351
515
516