50960025/CP0514 84 PRINTED IN U.S.A.
ENGINE DIAGNOSTIC TROUBLE CODES (DTCs)
Engine diagnostic trouble codes are displayed in the
instrument display panel.
Stored and active diagnostic trouble codes are dis-
played as a two-part code: Suspect Parameter Number
(SPN) and Failure Mode Identifier (FMI), as shown on
the tables on this and the following pages.
The first part is a Suspect Parameter Number (SPN)
followed by a Failure Mode Identifier (FMI). To deter-
mine the exact type of failure, both parts (SPN and
FMI) of the code are needed.
The SPN indentifies the system or the component that
has the failure; for example, SPN 000110 indicates a
failure in the engine coolant temperature circuit.
The FMI indentifies the type of failure that has
occurred; for example, FMI 03 indicates a value above
normal. Combining SPN 000110 with FMI 03 means
the engine coolant temperature input voltage is too
high.
Always contact your servicing engine dealer for help
in correcting the diagnostic trouble codes that are dis-
played for the engine.
The fault code listing in the following tables are in
ascending order.
The first table list the many SPN codes. The second
table lists the FMI codes. To use the tables below, first
write down the SPN and FMI codes displayed in the
multi-function display. Locate the SPN code and its
associated definition in the SPN table, then locate the
associated FMI code and its associated definition in the
FMI table.
NOTE: Not all of these codes are used on all
engine applications.
NOTE: If corrective actions below do not solve the
engine fault, contact your servicing engine dealer.
SPN SPN Name
Code
000027 EGR Valve Position Signal
000028 Digital Throttle Signal
000029 Secondary Analog Throttle Signal
000051 Air Throttle Poaition Signal
000054 Throttle Signal
000091 Primary Analog Throttle Signal
000094 Low Pressure Fuel Signal
000096 Fuel Level
000097 Water-in-fuel Signal
000100 Engine Oil Pressure Signal
000101 Crankcase Pressure Signal
000102 Manifold Air Pressure Signal
000103 Turbocharger Speed Signal
000105 Manifold Air Temperature Signal
000107 Air Filter Pressure Differential
000108 Barometric Pressure Signal
000109 Engine Coolant Pressure Signal
000110 Engine Coolant Temperature Signal
000111 Engine Coolant Level Alarm Switch
000127 Transmission Oil Pressure Signal
000157 Fuel Rail Pressure Signal
000158 ECU Power Down
000168 Unswitched Battery Voltage
SPN SPN Name
Code
000174 Fuel Temperature Signal
000177 Transmission Oil Temperature Signal
000189 Engine Speed Derate
000190 Engine Speed
000191 Engine/Pump Speed
000237 VIN Security Data
000412 EGR TemperatureSignal
000611 Injector Drive #1
000612 Injector Drive #2
000620 Sensor Supply Voltage
000627 All Injector Circuits
000628 ECU Programming
000629 ECU EEPROM
000632 Fuel Shutoff Valve
000636 Camshaft Position Signal
000637 Crankshaft Position Signal
000638 Rack Position
000639 CAN Bus
000640 External Engine Protection
000641 VGT Actuator
000644 Lead ECU Sync Circuit
000647 Engine Fan Drive Circuit
000651 Injector #1
SUSPECT PARAMETER NUMBER (SPN) CODES
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