25
Operations
Trouble Codes
A feature of the ZPP 416 ECM is that DTC's (Diagnostic Trouble Codes) can be displayed to a technician to indicate
what historic faults are present without requiring the use of a personal computer. The DTC's can be flashed over the
MIL output while the RS232 serial receive input (PC RX) is grounded. This input may be grounded at the diagnostic
connector (pin A-brown/white wire). This connector is located behind the intake manifold near the front cylinder.
Once the ECM recognizes that the user is requesting flash codes, ignition key on-engine off, it will flash or blink a
leader code (111) x 3 times in a row. If the machine has been shut down due to a full waste tank you will also
observe flash code 552 (DTC1552) and 554 (DTC1554). After the leader code has been flashed for 3 times, the first
flash code in the active faults category will be flashed at the same rate. This will repeat depending on the number
of faults retained in memory. Once all faults have been flashed the leader flash code (111) will be repeated. The
codes are retained in memory. Once any issue is resolved and the machine started-run-stopped for 3 times without
a fault detected the light will go out on the 4th start. If an issue has not been resolved the light will remain on and
another code stored in history.
History faults will clear automatically after 20 start-run-stop cycles if the fault has not been detected.
#
DTC/
Pcode
Fault Description
CAN
SPN
CAN
FMI
Turns on
MIL?
MIL Flash
Code
Leader/Trailer Code
111
1
P0016
CRANK or CAM could not synchronize during
start
636
8
Yes
216
2
P0091
Fuel Pressure low voltage
94
4
Yes
291
3
P0092
Fuel Pressure high voltage
94
3
Yes
292
4
P0107
MAP Signal open or shorted to ground
106
4
Yes
127
5
P0108
MAP signal shorted high
106
16
Yes
128
6
P0112
IAT signal Low/Shorted to GND
105
4
Yes
112
7
P0113
IAT signal High/Open
105
3
Yes
113
8
P0116
ECT higher than warning threshold
110
15
Yes
116
9
P0117
ECT Sensor Low/Shorted Input
110
4
Yes
117
10
P0118
ECT Sensor High/Open Input
110
3
Yes
118
11
P0121
TPS1 voltage lower than TPS2 voltage
51
1
Yes
121
12
P0122
Throttle Position Signal 1 low voltage
51
4
Yes
122
13
P0123
Throttle Position Signal 1 high voltage
51
3
Yes
123
14
P0134
Pre-Cat O2 Signal No Activity
724
10
Yes
134
15
P0154
Post-Cat O2 Signal No Activity
520208
10
Yes
154
16
P0171
Gasoline bank 1 A/F is lean (adaptive learn)
520200
0
Yes
171
17
P0172
Gasoline bank 1 A/F is rich (adaptive learn)
520200
1
Yes
172
18
P0182
Gasoline Fuel Temp Low Voltage
174
4
Yes
182
19
P0183
Gasoline Fuel Temp High Voltage
174
3
Yes
183
22
P0217
ECT higher than engine shutdown threshold
110
0
Yes
217
23
P0219
Engine Over speed Condition
515
15
Yes
219
24
P0221
TPS1 voltage higher than TPS2 voltage
51
0
Yes
221
25
P0222
Throttle Position Signal 2 low voltage
520251
4
Yes
222
86411100 Manual Operators - Everest E-Idle Prochem
