Listing of Diagnostic Trouble Codes (DTCs)

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

If the corrective actions below do not solve the engine fault, contact your servicing dealer.

The SPN and FMI codes in the table below are not intended to be paired from left to right. 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 in the first column and its associated definition to the right in the second column. In the same way, locate the FMI in the forth column and its associated definition to the right in the fifth column.

SPN Code

SPN Name

 

FMI Code

FMI Name

27

EGR Valve Position Signal

 

0

Extremely High

28

Digital Throttle Signal

 

1

Extremely Low

29

Secondary Analog Throttle Signal

 

2

Invalid

51

Air Throttle Actuator Position Signal

 

3

Out of Range High

54

Throttle Signal

 

4

Out of Range Low

91

Primary Analog Throttle Signal

 

5

High Resistance

94

Low Pressure Fuel Signal

 

6

Low Resistance

96

Fuel Level

 

7

Mismatch

97

Water-in-fuel Signal

 

8

Signal Missing

100

Engine Oil Pressure Signal

 

9

Loss of Communication

101

Crankcase Pressure Signal

 

10

Change Abnormal

102

Manifold Air Pressure Signal

 

11

Activated

103

Turbocharger Speed Signal

 

12

Error

105

Manifold Air Temperature Signal

 

13

Fault

107

Air Filter Pressure Differential

 

14

Incorrect Message

108

Barometric Pressure Signal

 

15

Slightly High

109

Engine Coolant Pressure Signal

 

16

Moderately High

110

Engine Coolant Temperature Signal

 

17

Slightly Low

111

Engine Coolant Level Alarm Switch

 

18

Moderately Low

127

Transmission Oil Pressure Signal

 

19

Communication Error

157

Fuel Rail Pressure Signal

 

31

Condition Exists

158

ECU Power Down

     

168

Unswitched Battery Voltage

     

174

Fuel Temperature Signal

     

177

Transmission Oil Temperature Signal

     

189

Engine Speed Derate

     

190

Engine Speed

     

191

Engine/Pump Speed

     

237

VIN Security Data

     

412

EGR Temperature Signal

     

569

Rear Axle Diff Lock Signal

     

611

Injector Drive #1

     

612

Injector Drive #2

     

620

Sensor Supply Voltage

     

627

All Injector Circuits

     

628

ECU Programming

     

629

ECU EEPROM

     

632

Fuel Shutoff Valve

     

636

Camshaft Position Signal

     

637

Crankshaft Position Signal

     

638

Rack Position

     

639

CAN Bus

     

640

External Engine Protection

     

641

VGT Actuator

     

644

Lead ECU Sync Circuit

     

647

Engine Fan Drive Circuit

     

651

Injector #1

     

652

Injector #2

     

653

Injector #3

     

654

Injector #4

     

655

Injector #5

     

656

Injector #6

     

676

Cold Start Aid Relay Output Signal

     

729

Inlet Air Heater Signal

     

833

Rack Position Sensor

     

834

Rack Actuator

     

898

Requested Engine Speed Signal

     

970

External Shutdown Switch

     

971

External Derate Switch

     

974

Remote Throttle Signal

     

1075

Low Pressure Fuel Pump Data

     

1076

Fuel Inj Pump Control Valve

     

1077

Fuel Inj Pump Control Valve

     

1078

Fuel Inj Pump Spd/Pos Sensor

     

1079

Sensor Supply 1 Voltage

     

1080

Sensor Supply Voltage

     

1109

Engine Protection Approaching

     

1110

Engine Protection

     

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 Control Circuit

     

1347

Suction Control Valve Circuit

     

1348

Fuel Pump Control Valve #2

     

1349

Redundant Fuel Rail Pressure Signal

     

1485

Pump Power Relay

     

1568

Torque Curve Selection

     

1569

Engine Power Derate

     

1638

Hydraulic Oil Temperature Signal

     

1639

Fan Speed Signal

     

1762

Hydraulic Oil Pressure Signal

     

2000

Incorrect ECU

     

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

     

3246

DPF Outlet Temperature

     

3251

DPF Differential Pressure 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

     

3556

Fuel Dosing Nozzle

     

3587

Auto ether Control Circuit

     

3597

Injector Power Supply Voltage

     

3598

Injector Power Supply Voltage #2

     

3659

Spill Valve Circuit #1

     

3660

Spill Valve Circuit #2

     

3661

Spill Valve Circuit #3

     

3662

Spill Valve Circuit #4

     

3663

Spill Valve Circuit #5

     

3664

Spill Valve Circuit #6

     

3711

DOC Inlet Temp

     

3719

Calculated Soot Level

     

3720

Calculated Ash Level

     

3822

Rear EGR Valve Position Signal

     

3936

DPF Fault Occurrences

     

4077

Fuel Dosing Outlet Pressure Signal

     

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

     

5298

DOC Fault Occurrences

     

5456

Fuel Dosing Inlet Temp Signal

     

522458

Fuel Dosing Pump Data

     

522494

Intake Air Sensor Communication

     

522495

Exhaust Filter Temp Module

     

523379

Single Point Ground #7

     

523744

A/C Compressor

     

523926

Reverse Pump Pressure Sensor #1 Signal

     

523926

Reverse Pump Pressure Sensor #1 Signal

     

523927

Forward Pump Pressure Sensor #2 Signal

     

523927

Forward Pump Pressure Sensor #2 Signal

     

524037

MFWD Switch Circuit

     

524223

Rear Axle Diff Lock Signal

     

524225

Engine Start Protection

     

524235

MFWD Solenoid Circuit Voltage

     

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

HS01721A,00000D7-19-20100412