Diagnostic Trouble Codes (DTCs) — Listing

NOTE: Not all of these codes are used in all engine applications.

NOTE: Not all DTCs are listed below. See your application technical manual for more information.

There are several possible combinations of SPN and FMI codes. To use the table below, first write down the SPN and FMI codes you received from the engine diagnostic gauge. Locate each SPN and its associated definition. In the same way, locate the FMI and its associated definition.

FMI Code

FMI Name

0

Extremely High

1

Extremely Low

2

Invalid

3

Out of Range High

4

Out of Range Low

5

High Resistance

6

Low Resistance

7

Mismatch

8

Signal Missing

9

Loss of Communication

10

Change Abnormal

11

Activated

12

Error

13

Fault

14

Incorrect Message

15

Slightly High

16

Moderately High

17

Slightly Low

18

Moderately Low

19

Communication Error

31

Condition Exists

SPN Code

SPN Name

27

EGR Valve Position Signal

28

Digital Throttle Signal

29

Secondary Analog Throttle Signal

51

Air Throttle Actuator Position Signal

54

Throttle Signal

91

Primary Analog Throttle Signal

94

Low Pressure Fuel Pressure Signal

97

Water-in-fuel Signal

100

Engine Oil Pressure Signal

102

Manifold Air Pressure Signal

103

VGT Speed Signal

105

Manifold Air Temperature Signal

107

Air Filter Pressure Differential

108

Barometric Pressure Signal

109

Engine Coolant Pressure Signal

110

Engine Coolant Temperature Signal

111

Engine Coolant Level Alarm Switch

157

Fuel Rail Pressure Signal

158

ECU Power Down

160

Primary Shaft Speed Invalid

168

Unswitched Battery Voltage

174

Fuel Temperature Signal

189

Engine Speed Derate

190

Engine Speed

237

VIN Security Data

412

EGR Temperature Signal

611

Injector Drive #1

612

Injector Drive #2

613

Fuel Pressure Control Valve Drive

629

ECU EEPROM

636

Camshaft Position Signal

637

Crankshaft Position Signal

640

External Engine Protection

641

VGT Actuator

647

Engine Fan Drive Circuit

651

Injector #1

652

Injector #2

653

Injector #3

654

Injector #4

655

Injector #5

656

Injector #6

695

Unapproved Engine Speed Request

876

A-C System Drive Circuit

970

External Shutdown Switch

971

External Derate Switch

974

Remote Throttle Signal

1069

Calculated Tier Size

1075

Low Pressure Fuel Pump Data

1136

ECU Temperature Signal

1172

Intake Air Temperature

1176

Intake Air Pressure

1180

Calculated VGT Turbine Inlet Temp

1209

Exhaust Manifold Pressure Signal

1321

Engine Starter

1347

Fuel Pump Pressure Control Valve 1

1348

Fuel Pump Pressure Control Valve 2

1321

Engine Starter Control Circuit

1569

Engine Power Derate

1639

Fan Speed Signal

1761

DEF Tank Fuel Level Signal

2002-2253

Source Address 2-253

2629

Fixed Turbo Comp Outlet Temp Signal

2630

Charge Air Cooler Outlet Temp Signal

2659

EGR Flow Signal

2790

Fixed Turbocharger Comp Outlet Temp

2791

EGR Valve Drive Circuit

2795

VGT Calibration Version

2797

Injector High Voltage Supply #1

2798

Injector High Voltage Supply #2

3031

DEF Tank Fluid Temp Signal

3216

DPF Outlet NOx

3226

SCR Outlet NOx

3246

DPF Outlet Temperature

3251

DPF Differential Pressure Signal

3361

DEF Dosing Injector Signal

3464

Air Throttle Actuator Drive Circuit

3471

Fuel Dosing Control Valve Signal

3480

Fuel Dosing Inlet Pressure Signal

3482

Fuel Dosing Shutoff Valve Signal

3509

Sensor Supply #1 Voltage

3510

Sensor Supply #2 Voltage

3511

Sensor Supply #3 Voltage

3512

Sensor Supply #4 Voltage

3513

Sensor Supply #5 Voltage

3514

Sensor Supply #6 Voltage

3516

Aftertreatment DEF Concentration

3517

DEF Tank Fluid Level

3556

Fuel Dosing Nozzle

3597

Injector Power Supply Voltage

3719

Calculated Soot Level

3720

Calculated Ash Level

3936

DPF Fault Occurrences

4077

Fuel Dosing Outlet Pressure Signal

4334

DEF Dosing Unit Outlet Pressure

4341

DEF Dosing Unit Pressure line Heater

4343

DEF Dosing Unit Supply Line Heater

4345

DEF Dosing Unit Return Line Heater

4360

SCR Inlet Temperature

4363

SCR Outlet Temperature

4364

SCR Catalyst Conversion Efficiency

4366

DEF Tank Heater Coolant Valve

4376

Reversing Valve

4490

Intake Air Humidity

4765

DOC Inlet Temp

4766

DOC Outlet Temp

4795

DPF Missing

5018

DOC Fault Occurrences

5125

Sensor Supply #7 Voltage

5126

Sensor Supply #8 Voltage

5127

Sensor Supply #9 Voltage

5298

DOC Efficiency

5435

DEF Dosing Unit Pump

5456

Fuel Dosing Inlet Temp Signal

5571

HPCR Pressure Relief Valve

5743

SCR Temperature Module

5745

DEF Dosing Unit Heater

522494

Intake Air Sensor Communication

522495

Exhaust Filter Temp Module

NOTE: Diagnostic gauge on instrument panel may also display text for communication faults, such as “CAN Bus FAILURE”. Contact your servicing dealer.

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