Rehlko Generator Fault Codes

603 documented Rehlko fault codes — causes, diagnosis and repair steps for each, drawn from OEM service literature. Page 2 of 3.

Air Intake

Cooling

P1-18 SPN 1137 FMI 9 516730 31 175 5 190 3 1148 5 LOW OIL PRESSURE 1143 9 111 17 4360 31 516723 31 MAINTENANCE REQUIRED SPN 1136 FMI 31 SPN 730 FMI 3 SPN 1181 FMI 15 3031 0 4413 11 UNDERSPEED CONDITION 157 0 171 5 LOCKED ROTOR 1148 15 1151 15 1141 11 157 4 1140 11 636 14 1150 5 SPN 1076 FMI 6 SPN 1137 FMI 14 4449 2 SPN 1181 FMI 0 1149 5 171 31 OVER CRANK 516718 31 ATS PHASEROT SPN 1181 FMI 5 516729 31 1152 14 1150 15 SPN 1212 FMI 3 SPN 1137 FMI 12 1139 14 P1-24 1141 5 190 5 4419 1 SPN 1137 FMI 0 6209 4 4811 0 OVER CRANK SD 4383 2 4413 5 SPN 1231 FMI 11 174 3 174 5 1149 15 6209 3 BATTERY VOLTAGE HIGH 516720 31 4360 4 636 3 1140 14 OF 1149 9 4360 2 1152 0 OVERTEMPERATURE FAULT 1151 12 516733 31 VOLTS L1-L2 HIGH 4342 4 SPN 1212 FMI 31 SPN 1076 FMI 3 P1-13 LOW COOLANT LEVEL N/A SPN 1231 FMI 5 175 4 516721 31 516719 31 BATTERY VOLTAGE LOW 5368 0 111 1 1151 11 3031 3 1150 0 SPN 1212 FMI 15 1150 9 LOW CHARGING BATTERY SPN 1180 FMI 5 1142 9 4443 31 P1-14 SPN 1138 FMI 12 636 5 1139 15 1152 5 4377 31 1143 0 SPN 1076 FMI 4 1148 11 SPN 1137 FMI 11 SPD SENS FLT 516749 4 HE INJECTOR CODES 1149 11 OC SPN 1181 FMI 12 SPN 1138 FMI 9 AUX INPUT ALT PROTECT SHTDWN 171 3 111 31 1143 14

Fuel

660 8 655 8 1239 11 660 5 655 5 656 3 DEF QUALITY ALERT 658 4 659 4 659 5 660 0 KD27V12 661 4 661 3 660 3 662 0 661 8 656 4 DERATE WARNING 658 3 657 8

Sensors

LOSSOFCOMAPM METERUNKNOWN ERRATICSIG

Speed

ENGINE SPEED HIGH SD *ENGINE SPEED LOW SD *

Starting

516585 3 516581 4 516582 4 516584 3 516493 31 EMERG STOP SHUTDWN 516583 4 516583 3 516512 31 516543 31 LOW BATTERY VOLTAGE 516587 3

Transfer Switch

CONTACTOROK FAIL TO OPEN SOURCE1

ASK RUDY ABOUT YOUR REHLKO

Get a diagnosis walkthrough for any Rehlko fault on your specific unit — cited to the OEM manual, not a forum guess.