GM Service Manual Online
For 1990-2009 cars only

This master DTC list includes all applicable DTCs in alphanumeric order with descriptors.

DTC

DTC Descriptor

Module That Sets the DTC

Diagnostic Procedure

Important: Do not clear any DTCs unless instructed to do so by a diagnostic procedure.

Important: If any DTCs are Powertrain related DTCs, select Capture Info in order to store the DTC information with the scan tool.

Diagnose any current DTCs in the following order:

  1. DTCs that begin with a U
  2. Any of the following: C0550, P0601, P0602, P0603, P0604, P0605, P0606, P062F, or P1621
  3. Any of the following: C0899, C0900, P0562, or P0563
  4. Component level DTCs
  5. System level DTCs
  6. Any remaining DTCs

B0540

Speedometer Circuit

IPC

DTC B0540

B0560

Tachometer Circuit

IPC

DTC B0560

B2745

Traction Control Switch Circuit

EBCM

DTC B2745

C0035

Left Front Wheel Speed Sensor Circuit

EBCM

DTC C0035-C0052

C0036

Left Front Wheel Speed Sensor Circuit Range/Performance

EBCM

DTC C0035-C0052

C0037

Left Front Wheel Speed Sensor Circuit Low

EBCM

DTC C0035-C0052

C0040

Right Front Wheel Speed Sensor Circuit

EBCM

DTC C0035-C0052

C0041

Right Front Wheel Speed Sensor Circuit Range/Performance

EBCM

DTC C0035-C0052

C0042

Right Front Wheel Speed Sensor Circuit Low

EBCM

DTC C0035-C0052

C0046

Left Rear Wheel Speed Sensor Circuit Range/Performance

EBCM

DTC C0035-C0052

C0047

Left Rear Wheel Speed Sensor Circuit Low

EBCM

DTC C0035-C0052

C0051

Right Rear Wheel Speed Sensor Circuit Range/Performance

EBCM

DTC C0035-C0052

C0052

Right Rear Wheel Speed Sensor Circuit Low

EBCM

DTC C0035-C0052

C0110

Pump Motor Circuit

EBCM

DTC C0110

C0163

Antilock Brake System (ABS)/Traction Control System (TCS) Brake Switch Circuit Low

EBCM

DTC C0163 or C0164

C0164

Antilock Brake System (ABS)/Traction Control System (TCS) Brake Switch Circuit High

EBCM

DTC C0163 or C0164

C0220

Left Front Antilock Brake System (ABS) Channel in Release Too Long

EBCM

DTC C0220-C0229

C0221

Right Front Antilock Brake System (ABS) Channel in Release Too Long

EBCM

DTC C0220-C0229

C0222

Rear Antilock Brake System (ABS) Channel in Release Too Long

EBCM

DTC C0220-C0229

C0223

Left Front Antilock Brake System (ABS) Channel Motor Free Spins

EBCM

DTC C0220-C0229

C0224

Right Front Antilock Brake System (ABS) Channel Motor Free Spins

EBCM

DTC C0220-C0229

C0225

Rear Antilock Brake System (ABS) Channel Motor Free Spins

EBCM

DTC C0220-C0229

C0226

Left Front Traction Control System (TCS) Channel Will Not Move

EBCM

DTC C0220-C0229

C0227

Right Front Traction Control System (TCS) Channel Will Not Move

EBCM

DTC C0220-C0229

C0228

Left Rear Antilock Brake System (ABS) Channel in Release Too Long

EBCM

DTC C0220-C0229

C0229

Right Rear Antilock Brake System (ABS) Channel in Release Too Long

EBCM

DTC C0220-C0229

C0267

Low Brake Fluid Indicated

EBCM

DTC C0267

C0272

Base Brake Pump Motor Circuit

EBCM

DTC C0272

C0285

Brake Fluid Flow Switch Circuit Low

EBCM

DTC C0285

C0286

Brake Fluid Flow Switch Circuit High

EBCM

DTC C0286 or C086

C0550

Electronic Control Unit (ECU) Performance

EBCM

DTC C0550

C0899

Device (Single or 1) Voltage Low

EBCM

DTC C0899

C0900

Device (Single or 1) Voltage High

EBCM

DTC C0900

P0016

Crankshaft Position (CKP)-Camshaft Position (CMP) Correlation

ECM

DTC P0016

P0027

Exhaust Throttle Control valve Functional Check

ECM

DTC P0027

P003A

Turbocharger Boost Control Position Not Learned

ECM

DTC P003A

P0045

Turbocharge Boost Control Solenoid Control Circuit

ECM

DTC P0045

P0079

Exhaust Throttle Control Valve Sensor Circuit Low Voltage

ECM

DTC P0079 or P0080

P0080

Exhaust Throttle Control Valve Sensor Circuit High Voltage

ECM

DTC P0079 or P0080

P0087

Fuel Rail Pressure (FRP) Too Low

ECM

DTC P0087 for the 7.8L (LG4) engine

or

DTC P0087 or P0088 for the 7.8L (LF8) engine

P0088

Fuel Rail Pressure (FRP) Too High

ECM

DTC P0088 for the 7.8L (LG4) engine

or

DTC P0087 or P0088 for the 7.8L (LF8) engine

P0089

Fuel Pressure Regulator Performance

ECM

DTC P0089

P0091

Fuel Pressure Regulator Solenoid 1 Control Circuit Low Voltage

ECM

DTC P0091 for the 7.8L (LG4) engine

Fuel Pressure Regulator Solenoid Control Circuit Low Voltage

DTC P0091 or P0092 for the 7.8L (LF8) engine

P0092

Fuel Pressure Regulator Solenoid 1 Control Circuit High Voltage

ECM

DTC P0092 for the 7.8L (LG4) engine

Fuel Pressure Regulator Solenoid Control Circuit High Voltage

DTC P0091 or P0092 for the 7.8L (LF8) engine

P0093

Fuel System Large Leak Detected

ECM

DTC P0093

P0101

Mass Air Flow (MAF) Sensor Performance

ECM

DTC P0101

P0102

Mass Air Flow (MAF) Sensor Circuit Low Frequency

ECM

DTC P0102 or P0103

P0103

Mass Air Flow (MAF) Sensor Circuit High Frequency

ECM

DTC P0102 or P0103

P0107

Barometric Pressure (BARO) Sensor Circuit Low Voltage

ECM

DTC P0107

P0108

Barometric Pressure (BARO) Sensor Circuit High Voltage

ECM

DTC P0108

P0112

Intake Air Temperature (IAT) Sensor Circuit Low Voltage

ECM

DTC P0112 for the 7.8L (LG4) engine

or

DTC P0112 or P0113 for the 7.8L (LF8) engine

P0113

Intake Air Temperature (IAT) Sensor Circuit High Voltage

ECM

DTC P0113 for the 7.8L (LG4) engine

or

DTC P0112 or P0113 for the 7.8L (LF8) engine

P0116

Engine Coolant Temperature (ECT) Sensor Performance

ECM

DTC P0116

P0117

Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

ECM

DTC P0117 for the 7.8L (LG4) engine

or

DTC P0117 or P0118 for the 7.8L (LF8) engine

P0118

Engine Coolant Temperature (ECT) Sensor Circuit High Voltage

ECM

DTC P0118 for the 7.8L (LG4) engine

or

DTC P0117 or P0118 for the 7.8L (LF8) engine

P0126

Engine Coolant Temperature (ECT) Insufficient For Stable Operation

ECM

DTC P0126

P0128

Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature

ECM

DTC P0128

P0181

Fuel Temperature Sensor Performance

ECM

DTC P0181

P0182

Fuel Temperature Sensor Circuit Low Voltage

ECM

DTC P0182 for the 7.8L (LG4) engine

or

DTC P0182 or P0183 for the 7.8L (LF8) engine

P0183

Fuel Temperature Sensor Circuit High Voltage

ECM

DTC P0183 for the 7.8L (LG4) engine

or

DTC P0182 or P0183 for the 7.8L (LF8) engine

P0191

Fuel Rail Pressure (FRP) Sensor Performance

ECM

DTC P0191

P0192

Fuel Rail Pressure (FRP) Sensor Circuit Low Voltage

ECM

DTC P0192 for the 7.8L (LG4) engine

or

DTC P0192 or P0193 for the 7.8L (LF8) engine

P0193

Fuel Rail Pressure (FRP) Sensor Circuit High Voltage

ECM

DTC P0193 for the 7.8L (LG4) engine

or

DTC P0192 or P0193 for the 7.8L (LF8) engine

P0201

Injector 1 Control Circuit

ECM

DTC P0201, P0202, P0203, P0204, P0205, or P0206 for the 7.8L (LF8) engine

or

DTC P0201, P0202, P0203, P0204, P0205, or P0206 for the 7.8L (LG4) engine

P0202

Injector 2 Control Circuit

ECM

DTC P0201, P0202, P0203, P0204, P0205, or P0206 for the 7.8L (LF8) engine

or

DTC P0201, P0202, P0203, P0204, P0205, or P0206 for the 7.8L (LG4) engine

P0203

Injector 3 Control Circuit

ECM

DTC P0201, P0202, P0203, P0204, P0205, or P0206 for the 7.8L (LF8) engine

or

DTC P0201, P0202, P0203, P0204, P0205, or P0206 for the 7.8L (LG4) engine

P0204

Injector 4 Control Circuit

ECM

DTC P0201, P0202, P0203, P0204, P0205, or P0206 for the 7.8L (LF8) engine

or

DTC P0201, P0202, P0203, P0204, P0205, or P0206 for the 7.8L (LG4) engine

P0205

Injector 5 Control Circuit

ECM

DTC P0201, P0202, P0203, P0204, P0205, or P0206 for the 7.8L (LF8) engine

or

DTC P0201, P0202, P0203, P0204, P0205, or P0206 for the 7.8L (LG4) engine

P0206

Injector 6 Control Circuit

ECM

DTC P0201, P0202, P0203, P0204, P0205, or P0206 for the 7.8L (LF8) engine

or

DTC P0201, P0202, P0203, P0204, P0205, or P0206 for the 7.8L (LG4) engine

P0219

Engine Overspeed

ECM

DTC P0219 for the 7.8L (LF8) engine

or

DTC P0219 for the 7.8L (LG4) engine

P0234

Engine Overboost

ECM

DTC P0234 for the 7.8L (LF8) engine

or

DTC P0234 for the 7.8L (LG4) engine

P0237

Turbocharger Boost Sensor Circuit Low Voltage

ECM

DTC P0237 or P0238 for the 7.8L (LF8) engine

or

DTC P0237 for the 7.8L (LG4) engine

P0238

Turbocharger Boost Sensor Circuit High Voltage

ECM

DTC P0237 or P0238 for the 7.8L (LF8) engine

or

DTC P0238 for the 7.8L (LG4) engine

P0261

Injector 1 Control Circuit Low Voltage

ECM

DTC P0261, P0264, P0267, P0270, P0273, or P0276

P0264

Injector 2 Control Circuit Low Voltage

ECM

DTC P0261, P0264, P0267, P0270, P0273, or P0276

P0267

Injector 3 Control Circuit Low Voltage

ECM

DTC P0261, P0264, P0267, P0270, P0273, or P0276

P0270

Injector 4 Control Circuit Low Voltage

ECM

DTC P0261, P0264, P0267, P0270, P0273, or P0276

P0273

Injector 5 Control Circuit Low Voltage

ECM

DTC P0261, P0264, P0267, P0270, P0273, or P0276

P0276

Injector 6 Control Circuit Low Voltage

ECM

DTC P0261, P0264, P0267, P0270, P0273, or P0276

P0299

Turbocharger Engine Underboost

ECM

DTC P0299

P02E2

Diesel Intake Air (IA) Flow Control Circuit Low Voltage

ECM

DTC P02E2 or P02E3

P02E3

Diesel Intake Air (IA) Flow Control Circuit High Voltage

ECM

DTC P02E2 or P02E3

P02E7

Diesel Intake Air (IA) Flow Position Sensor Performance

ECM

DTC P02E7

P02E8

Diesel Intake Air (IA) Flow Position Sensor Circuit Low Voltage

ECM

DTC P02E8 or P02E9

P02E9

Diesel Intake Air (IA) Flow Position Sensor Circuit High Voltage

ECM

DTC P02E8 or P02E9

P0335

Crankshaft Position (CKP) Sensor Circuit

ECM

DTC P0335 or P0336 for the 7.8L (LF8) engine

or

DTC P0335 for the 7.8L (LG4) engine

P0336

Crankshaft Position (CKP) Sensor Performance

ECM

DTC P0335 or P0336

P0340

Camshaft Position (CMP) Sensor Circuit

ECM

DTC P0340 or P0341

P0341

Camshaft Position (CMP) Sensor Performance

ECM

DTC P0340 or P0341

P0381

Wait to Start Lamp Control Circuit

ECM

DTC P0381

P0382

Glow Plug Controller Command Circuit Fault

ECM

DTC P0382

P0385

Crankshaft Position (CKP) Sensor B Circuit

ECM

DTC P0385

P0401

Exhaust Gas Recirculation (EGR) Flow Insufficient

ECM

DTC P0401

P0402

Exhaust Gas Recirculation (EGR) Flow Excessive

ECM

DTC P0402

P0403

Exhaust Gas Recirculation (EGR) Motor Control Circuit

ECM

DTC P0403

P0404

Exhaust Gas Recirculation (EGR) Open Position Performance

ECM

DTC P0404

P0409

Exhaust Gas Recirculation (EGR) Position Sensor Performance

ECM

DTC P0409

P040B

Exhaust Gas Recirculation (EGR) Temperature Sensor 1 Performance

ECM

DTC P040B

P040C

Exhaust Gas Recirculation (EGR) Temperature Sensor 1 Circuit Low Voltage

ECM

DTC P040C or P040D

P040D

Exhaust Gas Recirculation (EGR) Temperature Sensor 1 Circuit High Voltage

ECM

DTC P040C or P040D

P041B

Exhaust Gas Recirculation (EGR) Temperature Sensor 2 Performance

ECM

DTC P041B

P041C

Exhaust Gas Recirculation (EGR) Temperature Sensor 2 Circuit Low Voltage

ECM

DTC P041C or P041D

P041D

Exhaust Gas Recirculation (EGR) Temperature Sensor 2 Circuit High Voltage

ECM

DTC P041C or P041D

P042E

Exhaust Gas Recirculation (EGR) Closed Position Performance

ECM

DTC P042E

P0461

Fuel Level Sensor 1 Performance

ECM

DTC P0461

P0462

Fuel Level Sensor 1 Circuit Low Voltage

ECM

DTC P0462

P0463

Fuel Level Sensor 1 Circuit High Voltage

ECM

DTC P0463

P0500

Vehicle Speed Sensor (VSS) Circuit

ECM

DTC P0500

P0506

Idle Speed Low

ECM

DTC P0506 or P0507

P0507

Idle Speed High

ECM

DTC P0506 or P0507

P0512

Starter Switch Circuit

ECM

DTC P0512

P0522

Engine Oil Pressure (EOP) Sensor Circuit Low Voltage

ECM

DTC P0522

P0523

Engine Oil Pressure (EOP) Sensor Circuit High Voltage

ECM

DTC P0523

P0562

System Voltage Low

ECM

DTC P0562

P0563

System Voltage High

ECM

DTC P0563

P0567

Cruise Control Resume Switch Circuit

ECM

DTC P0567

P0568

Cruise Control Set Switch Circuit

ECM

DTC P0568

P0571

Cruise Control Brake Switch Circuit

ECM

DTC P0571

P0602

Control Module Not Programmed

ECM

DTC P0601, P0602, P0603, P0604, P0605, P0606, P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610 for the 7.8L (LG4) engine

or

DTC P0601, P0602, P0603, P0604, P0605, P0606, or P062F for the 7.8L (LF8) engine

P0606

Control Module Internal Performance

ECM

DTC P0601, P0602, P0603, P0604, P0605, P0606, P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610 for the 7.8L (LG4) engine

or

DTC P0601, P0602, P0603, P0604, P0605, P0606, or P062F for the 7.8L (LF8) engine

P0608

Vehicle Speed Output Circuit

ECM

DTC P0608

P0621

Generator L-Terminal Circuit

ECM

DTC P0621

P0622

Generator F-Terminal Circuit

ECM

DTC P0622

P062F

Control Module Long Term Memory Performance

ECM

DTC P0601, P0602, P0603, P0604, P0605, P0606, or P062F

P0641

5-Volt Reference 1 Circuit

ECM

DTC P0641

P0642

5-Volt Reference 1 Circuit Low Voltage

ECM

DTC P0642 or P0643

P0643

5-Volt Reference 1 Circuit High Voltage

ECM

DTC P0642 or P0643

P0650

Malfunction Indicator Lamp (MIL) Control Circuit

ECM

DTC P0650

P0651

5-Volt Reference 2 Circuit

ECM

DTC P0651

P0652

5-Volt Reference 2 Circuit Low Voltage

ECM

DTC P0652 or P0653

P0653

5-Volt Reference 2 Circuit High Voltage

ECM

DTC P0652 or P0653

P0654

Engine Speed Output Circuit

ECM

DTC P0654

P0687

Engine Controls Ignition Relay Control Circuit High Voltage

ECM

DTC P0687

P0698

5-Volt Reference 3 Circuit Low Voltage

ECM

DTC P0698 or P0699

P0699

5-Volt Reference 3 Circuit High Voltage

ECM

DTC P0698 or P0699

P0833

Clutch Pedal Switch 2 Circuit

ECM

DTC P0833

P1085

Fuel System Overpressure

ECM

DTC P1085 or P1295

P1087

Fuel Rail Pressure (FRP) Trim Too Low

ECM

DTC P1087

P1088

Fuel Rail Pressure (FRP) Trim Too High

ECM

DTC P1088

P1093

Fuel Rail Pressure Low During Power Enrichment

ECM

DTC P1093

P1125

Accelerator Pedal Position (APP) System

ECM

DTC P1125 for the 7.8L (LG4) engine

or

DTC P1125 for the 7.8L (LF8) engine

P1261

Injector Positive Voltage Control Circuit

ECM

DTC P1261

P1263

Injector Positive Voltage Control Circuit Group 1 Low Voltage

ECM

DTC P1263

P1264

Injector Positive Voltage Control Circuit Group 1 High Voltage

ECM

DTC P1264

P1265

Injector Positive Voltage Control Circuit Group 2 Low Voltage

ECM

DTC P1265

P1266

Injector Positive Voltage Control Circuit Group 2 High Voltage

ECM

DTC P1266

P1271

Accelerator Pedal Position (APP) Sensor 1-2 Correlation

ECM

DTC P1271

P1272

Accelerator Pedal Position (APP) Sensor 2-3 Correlation

ECM

DTC P1272

P1273

Accelerator Pedal Position (APP) Sensor 1-3 Correlation

ECM

DTC P1273

P1277

Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage

ECM

DTC P1277

P1278

Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage

ECM

DTC P1278

P1282

Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage

ECM

DTC P1282

P1283

Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage

ECM

DTC P1283

P1287

Accelerator Pedal Position (APP) Sensor 3 Circuit Low Voltage

ECM

DTC P1287

P1288

Accelerator Pedal Position (APP) Sensor 3 Circuit High Voltage

ECM

DTC P1288

P1293

Injector Circuit Low to High Current Transition Time Bank 1

ECM

DTC P1293

P1295

Injector Circuit High To Low Current Transition Time Bank 1

ECM

DTC P1085 or P1295

P160B

Injector Calibration Incorrect

ECM

DTC P160B

P1621

Control Module Long Term Memory Performance

ECM

DTC P0601, P0602, P0603, P0604, P0605, P0606, P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610

P1646

5-Volt Reference 3 Circuit

ECM

DTC P1646

P2002

Diesel Particulate Filter Low Efficiency

ECM

DTC P2002

P2003

Mass Air Flow (MAF) Sensor Circuit High Voltage

ECM

DTC P2003

P2004

Mass Air Flow (MAF) Sensor Circuit Low Voltage

ECM

DTC P2004

P2005

Power Take Off (PTO) Sensor Circuit High Voltage

ECM

DTC P2005

P2007

Turbocharger Boost Control Solenoid Control Circuit High Voltage

ECM

DTC P2007

P2008

Turbocharger Boost Control Solenoid Control Circuit Low Voltage

ECM

DTC P2008

P2011

Injector Positive Voltage Control Circuit Group 3

ECM

DTC P2011

P2012

Injector Positive Voltage Control Circuit Group 4

ECM

DTC P2012

P2032

Exhaust Gas Temperature (EGT) Sensor 2 Circuit Low Voltage

ECM

DTC P2032 or P2033

P2033

Exhaust Gas Temperature (EGT) Sensor 2 Circuit High Voltage

ECM

DTC P2032 or P2033

P2066

Fuel Level Sensor 2 Performance

ECM

DTC P2066

P2067

Fuel Level Sensor 2 Circuit Low Voltage

ECM

DTC P2067

P2068

Fuel Level Sensor 2 Circuit High Voltage

ECM

DTC P2068

P2084

Exhaust Gas Temperature (EGT) Sensor 2 Performance

ECM

DTC P2084

P2122

Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage

ECM

DTC P2122, P2123, P2127, P2128, P2132, P2133, P2138, P2139, or P2140

P2123

Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage

ECM

DTC P2122, P2123, P2127, P2128, P2132, P2133, P2138, P2139, or P2140

P2127

Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage

ECM

DTC P2122, P2123, P2127, P2128, P2132, P2133, P2138, P2139, or P2140

P2128

Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage

ECM

DTC P2122, P2123, P2127, P2128, P2132, P2133, P2138, P2139, or P2140

P2132

Accelerator Pedal Position (APP) Sensor 3 Circuit Low Voltage

ECM

DTC P2122, P2123, P2127, P2128, P2132, P2133, P2138, P2139, or P2140

P2133

Accelerator Pedal Position (APP) Sensor 3 Circuit High Voltage

ECM

DTC P2122, P2123, P2127, P2128, P2132, P2133, P2138, P2139, or P2140

P2138

Accelerator Pedal Position (APP) Sensor 1-2 Correlation

ECM

DTC P2122, P2123, P2127, P2128, P2132, P2133, P2138, P2139, or P2140

P2139

Accelerator Pedal Position (APP) Sensor 1-3 Correlation

ECM

DTC P2122, P2123, P2127, P2128, P2132, P2133, P2138, P2139, or P2140

P2140

Accelerator Pedal Position (APP) Sensor 2-3 Correlation

ECM

DTC P2122, P2123, P2127, P2128, P2132, P2133, P2138, P2139, or P2140

P2146

Injector Positive Voltage Control Circuit Group 1

ECM

DTC P2146-P2151

P2147

Injector Positive Voltage Control Circuit Group 1 Low Voltage

ECM

DTC P2146-P2151

P2148

Injector Positive Voltage Control Circuit Group 1 High Voltage

ECM

DTC P2146-P2151

P2149

Injector Positive Voltage Control Circuit Group 2

ECM

DTC P2146-P2151

P2150

Injector Positive Voltage Control Circuit Group 2 Low Voltage

ECM

DTC P2146-P2151

P2151

Injector Positive Voltage Control Circuit Group 2 High Voltage

ECM

DTC P2146-P2151

P2227

Barometric Pressure (BARO) Sensor Performance

ECM

DTC P2227

P2228

Barometric Pressure (BARO) Sensor Circuit Low Voltage

ECM

DTC P2228 or P2229

P2229

Barometric Pressure (BARO) Sensor Circuit High Voltage

ECM

DTC P2228 or P2229

P244B

Fuel Pressure Regulator Solenoid 2 Performance

ECM

DTC P244B

P244C

Catalyst Temperature Too Low During Regeneration

ECM

DTC P244C

P2453

Diesel Particulate Filter Differential Pressure Sensor Performance

ECM

DTC P2453

P2454

Diesel Particulate Filter Differential Pressure Sensor Circuit Low Voltage

ECM

DTC P2454 or P2455

P2455

Diesel Particulate Filter Differential Pressure Sensor Circuit High Voltage

ECM

DTC P2454 or P2455

P2457

Exhaust Gas Recirculation (EGR) Cooling System Performance

ECM

DTC P2457

P2463

Diesel Particulate Filter Soot Accumulation

ECM

DTC P2463

P254D

Power Take-off (PTO) Engine Speed Selector Sensor Circuit High Voltage

ECM

DTC P254D

P2563

Diesel Particulate Filter Soot Accumulation

ECM

DTC P2563

P2564

Turbocharger Boost Control Position Sensor Circuit Low Voltage

ECM

DTC P2564 for the 7.8L (LG4) engine

or

DTC P2564 or P2565 for the 7.8L (LF8) engine

P2565

Turbocharger Boost Control Position Sensor Circuit High Voltage

ECM

DTC P2565 for the 7.8L (LG4) engine

or

DTC P2564 or P2565 for the 7.8L (LF8) engine

P2900

Turbocharger Boost Control System Performance

ECM

DTC P2900

P2901

Exhaust Gas Recirculation (EGR) Position Sensor Performance

ECM

DTC P2901

P2902

Exhaust Gas Recirculation (EGR) Open Position Performance

ECM

DTC P2902

P2903

Exhaust Gas Recirculation (EGR) Flow Insufficient

ECM

DTC P2903

P2920

Engine Controls Ignition Relay Feedback Circuit

ECM

DTC P2920

P2921

Fuel Rail Pressure (FRP) Too High

ECM

DTC P2921

P2922

Fuel Rail Pressure (FRP) Too High

ECM

DTC P2922

P2923

Fuel Rail Pressure Low During Power Enrichment

ECM

DTC P2923

U1000

Class 2 Data Link

ECM, EBCM, IPC, RCDLR, SDGM, TCM, Chime Module

DTC U1000 and U1255

U1016

Lost Communications With Engine Control Module (ECM)

EBCM, IPC, Chime Module

DTC U1001-U1254

U1024

Lost Communications With Transmission Control Module (TCM)

ECM, IPC

DTC U1001-U1254

U1031

Lost Communications With Serial Data Gateway Module (SDGM)

ECM

DTC U1001-U1254

U1040

Lost Communications With Electronic Brake Control Module (EBCM)

ECM, IPC

DTC U1001-U1254

U1064

Lost Communications With Body Multiple Control (BCM) System

ECM, IPC

DTC U1001-U1254

U1088

Lost Communication with Sensing and Diagnostic Module (SDM)

IPC, SDGM

DTC U1001-U1254

U1096

Lost Communications With Instrument Panel Cluster (IPC)

ECM, SDGM, Chime Module

DTC U1001-U1254

U1111

Lost Communications With Multifunction Alarm Module (MAM)/Chime Module

IPC

DTC U1001-U1254

U1176

Lost Communications With Remote Control Door Lock Receiver (RCDLR)

IPC, SDGM

DTC U1001-U1254

U1255

Lost Communications

ECM, EBCM, IPC, RCDLR, SDGM, TCM

DTC U1000 and U1255

U1300

Class 2 Data Link Low

ECM, IPC, RCDLR, SDGM, TCM, Chime Module

DTC U1300, U1301, or U1305

U1301

Class 2 Data Link High

ECM, IPC, RCDLR, SDGM, TCM, Chime Module

DTC U1300, U1301, or U1305

U1305

Class 2 Data Link Low or High

EBCM, RCDLR, SDGM, TCM

DTC U1300, U1301, or U1305

U2104

Controller Area Network (CAN) Bus Reset Counter Overrun

EBCM, ECM, FICM, TCM

DTC U2104

U2106

Lost Communications With Transmission Control System

EBCM, ECM, FICM

DTC U2106

U2108

Lost Communications With ABS/TCS Control System

ECM, FICM, TCM

DTC U2108