PREVOST X3-45 - Ddec V Diagnostic Codes

Technical Information 121
DDEC V DIAGNOSTIC CODES
To read the diagnostic codes, a Diagnostic Data Reader should be plugged into the receptacle located on
the lower side panel of the L.H. control panel. To read diagnostic codes as blink codes, momentarily
depress the STOP ENGINE OVERRIDE switch while the ignition is ON, the engine is idling or shut off.
Active codes will be flashed on the STOP ENGINE indicator light followed by the inactive codes being
flashed on the CHECK ENGINE indicator light. The cycle is repeated until the operator depresses the
STOP ENGINE OVERRIDE switch again. For example: code "43" consists of four flashes, followed by a
short pause, then another three flashes in quick succession. The following table is a list of the DDEC
diagnostic codes.
DDEC V Code PID SID FMI DESCRIPTION
11 187 -- 4 Variable Speed Governor Sensor Voltage Low
11 187 -- 7
Variable Speed Governor Switch System Not
Responding
12 187 -- 3 Variable Speed Governor Sensor Voltage High
13 111 -- 4 Coolant Level Sensor Input Voltage Low
13 111 -- 6 Add Coolant Level Sensor Input Voltage Low
13 146 6 EGR Valve Current too High
14 52 -- 3
Intercooler Coolant Temperature Sensor Input
Voltage High
14 110 -- 3 Coolant Temperature Sensor Input Voltage High
14 175 -- 3 Oil Temperature Sensor Input Voltage High
15 52 -- 4
Intercooler Coolant Temperature Sensor Input
Voltage Low
15 110 -- 4 Coolant Temperature Sensor Input Voltage Low
15 175 -- 4 Oil Temperature Sensor Input Voltage Low
16 111 -- 3 Coolant Level Sensor Input Voltage High
16 111 -- 5 Add Coolant Level Sensor Input Voltage High
16 146 5 EGR Valve Current too Low
17 51 -- 3 Throttle Plate Position Sensor Input Voltage High
17 72 -- 3 Blower Bypass Position Input Voltage High
17 354 -- 3 Relative Humidity Sensor Circuit Failed High
18 51 -- 4 Throttle Plate Position Sensor Input Voltage Low
18 72 -- 4 Blower Bypass Position Input Voltage Low
18 354 -- 4 Relative Humidity Sensor Circuit Failed Low
21 91 -- 3 Throttle Position Sensor Input Voltage High
22 91 -- 4 Throttle Position Sensor Input Voltage Low
23 174 -- 3 Fuel Temperature Sensor Input Voltage High
23 -- 65 3 Oxygen Content Circuit Input Voltage High
24 174 -- 4 Fuel Temperature Sensor Input Voltage Low
24 -- 65 4 Oxygen Content Circuit Input Voltage Low
25 -- -- -- Reserved for ‘‘No Codes"