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Diagnostic Trouble Codes 2003 Cadillac CTS

DTC's

Question mark
Please see Reading Diagnostic Codes for how to use the onboad diagnostics to ask your Cadillac what it thinks.


DTC

Descriptor

DTC B0001

PCM Discrete Input Speed Signal Error

DTC B0012, B0013, B0014, B0016, B0017, or B0018

Right Front/Passenger Frontal Deployment Loop Circuit

DTC B0022, B0024, B0026, B0042, B0043, or B0044

Left Front/Driver Frontal Deployment Loop Circuit

DTC B0028, B0029, or B0030

Left Front/Driver Side Deployment Loop Circuit

DTC B0040, B0041, or B0045

Left Front/Driver Side Deployment Loop Circuit

DTC B0051

Deployment Commanded

DTC B0053

Deployment Commanded with Loop Malfunctions Present

DTC B0057, B0058, or B0059

Left Front/Driver Frontal Deployment Loop (Stage 2) Open

DTC B0061, B0062, or B0068

Roof Rail Module-Left Deployment Loop Circuit

DTC B0064, B0065, or B0066

Left Front/Driver Frontal Deployment Loop (Stage 2) Open

DTC B0069, B0070, or B0071

Roof Rail Module-Right Deployment Loop Circuit

DTC B0077, B0078, B0079, B0080, B0081, or B0082

Left Front/Driver Frontal Deployment Loop (Stage 2) Open

DTC B0100, B0101, or B0102

Electronic Front End Sensor 1 Performance

DTC B0126, B0409, or B0419

Air Temperature/Mode Door Actuator Performance

DTC B0130, B0414, or B0424

Air Temperature/Mode Door Actuator Malfunction

DTC B0160 or B0162

Ambient Air Temperature Sensor Circuit

DTC B0164

Passenger Compartment Temperature Sensor #1 Circuit Range/Performance

DTC B0184 or B0189

Sunload Sensor Circuit

DTC B1000

ECU Malfunction

DTC B1001

Option Configuration Error

DTC B1004

Keep Alive Memory (KAM)

DTC B1007

EEPROM Write Error

DTC B1009

EEPROM Checksum Error

DTC B1013

ROM Checksum Error

DTC B1014

Program ROM Checksum Error

DTC B1271

Theft Lock Enabled

DTC B1327

Device Power Circuit Low

DTC B1328

Device Power Circuit High

DTC B1372

Device Ignition 1 Circuit Low

DTC B1382

Device Ignition ACCESSORY Circuit Low

DTC B1390

Device Voltage Reference Input CKT Malf

DTC B1513

Charging System Volts Low

DTC B1514

Charging System Volts High

DTC B1586

Mirror Horiz. Pos Sensor-Out of Range/Open

DTC B1591

Mirror Vert. Pos Sensor-Out of Range/Open

DTC B1697, B1702, B1707, or B1712

Mirror Control Switch Circuit Low

DTC B1717

Mirror Power Fold Control Switch Shorted Low

DTC B2455

Cellular Phone Microphone Circuit

DTC B2462

GPS Signal Error

DTC B2470

Cellular Phone Antenna Circuit

DTC B2476

Cellular Phone Select Service Switch Malfunction

DTC B2482

Cellular Phone Select Service Switch Range/Performance

DTC B2483 or B2484

Global Positioning System (GPS) Antenna Circuit

DTC B2556

Interior Lamp Rheostat Circuit Range

DTC B2575

Headlamp Control Circuit

DTC B2646

Ambient Light Sensor Circuit Range

DTC B2732

Trunk Release Switch Circuit Low

DTC B2757, B2762, B2767, or B2772

Memory Switch Circuit

DTC B3031

Key Decoder Device in Assem Learn Mode

DTC B3055

Key Not Present

DTC B3060

Security System Sensor Data Incorrect but Valid

DTC B3064 or B3069

Driver Door Key Cylinder Circuit

DTC B3142, B3147, B3152, or B3157

Door Lock Switch Circuit

DTC B3172, B3177, B3182, B3187, B3192, B3197, B3282, B3287, or B3292

Window Switch Circuit

DTC B3377, B3382, B3387, B3392, B3397, B3452, B3457, B3462, B3467, B3472, B3477, B3482, B3517, or B3522

Master Window Switch Circuit

DTC B3410

AHLD Front Axle Sensor Signal Circuit

DTC B3420

AHLD Rear Axle Sensor Signal Circuit

DTC B3527

Window Lockout Switch Circuit Low

DTC B3832 or B3833

Window Position Sensor Circuit

DTC B3935

Transponder Authentication Error

DTC C0128

Low Brake Fluid Circuit Low

DTC C0550

ECU Malfunction

DTC C1211

ABS Indicator Lamp Circuit Malfunction

DTC C1214

System Relay Contact or Coil Circuit Open

DTC C1217

Pump Motor Shorted to Ground

DTC C1218

Pump Motor Circuit Shorted to Voltage or Motor Ground Open

DTC C1221-C1235

Wheel Speed Sensor Circuit

DTC C1236

Low System Supply Voltage

DTC C1237

High System Supply Voltage

DTC C1241

Variable Effort Steering Circuit Malfunction

DTC C1242 or C1243

Pump Motor Circuit

DTC C1244

Powertrain Indicated Engine Drag Control Malfunction

DTC C1248

EBCM Turned the Red Brake Warning Indicator On

DTC C1254

Abnormal Shutdown Detected

DTC C1255 or C1256

ECU Malfunction

DTC C1261-C1274

EBCM Internal Solenoid Circuit

DTC C1276, P1644, or P1689

Delivered Torque Circuit

DTC C1277 or P0856

Powertrain Indicated Traction Control Malfunction

DTC C1278

TCS Temporarily Inhibited By PCM

DTC C1281, C1283, or C1286

VSES Sensors Uncorrected

DTC C1282

Yaw Rate Sensor Bias Circuit Malfunction

DTC C1284 or C1285

Lateral Accelerometer Circuit

DTC C1287 or C1288

Steering Position Sensor Circuit

DTC C1291

Open Brake Lamp Switch Contacts During Deceleration

DTC C1292, C1293, or C1296

Brake Fluid Pressure Sensor Circuit

DTC C1294

Brake Lamp Switch Circuit Always Active

DTC C1295

Brake Lamp Switch Circuit Open

DTC P0030, P0036, P0050, or P0056

HO2S Heater Control Circuit

DTC P0031, P0037, P0051, or P0057

HO2S Heater Control Circuit Low Voltage

DTC P0032, P0038, P0052, or P0058

HO2S Heater Control Circuit High Voltage

DTC P0101

Mass Air Flow (MAF) Sensor Performance

DTC P0102

Mass Air Flow (MAF) Sensor Circuit Low Frequency

DTC P0103

Mass Air Flow (MAF) Sensor Circuit High Frequency

DTC P0112

Intake Air Temperature (IAT) Sensor Circuit Low Voltage

DTC P0113

Intake Air Temperature (IAT) Sensor Circuit High Voltage

DTC P0116

Engine Coolant Temperature (ECT) Sensor Performance

DTC P0117

Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

DTC P0118

Engine Coolant Temperature (ECT) Sensor Circuit High Voltage

DTC P0121

TP Sensor Circuit Insufficient Activity

DTC P0122

Throttle Position (TP) Sensor Circuit Low Voltage

DTC P0123

Throttle Position (TP) Sensor Circuit High Voltage

DTC P0125

Engine Coolant Temperature (ECT) Insufficient for Closed Loop Fuel Control

DTC P0128

Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature

DTC P0130, P0136, P0150, or P0156

HO2S Circuit

DTC P0131, P0137, P0151, or P0157

HO2S Circuit Low Voltage

DTC P0132 or P0152

HO2S Circuit High Voltage

DTC P0133 or P0153

HO2S Slow Response

DTC P0134 or P0154

HO2S Circuit Insufficient Activity

DTC P0135, P0141, P0155, or P0161

HO2S Heater Performance

DTC P0138 or P0158

HO2S Circuit High Voltage

DTC P0140 or P0160

HO2S Circuit Insufficient Activity

DTC P0171 or P0174

Fuel Trim System Lean

DTC P0172 or P0175

Fuel Trim System Rich

DTC P0201-P0206

Injector Control Circuit

DTC P0218

Transmission Fluid Overtemperature

DTC P0219

Engine Overspeed

DTC P0221

Throttle Position (TP) Sensor 2 Performance

DTC P0222

Throttle Position (TP) Sensor 2 Circuit Low Voltage

DTC P0223

Throttle Position (TP) Sensor 2 Circuit High Voltage

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

Injector Control Circuit Low Voltage

DTC P0262, P0265, P0268, P0271, P0274, or P0277

Injector Control Circuit High Voltage

DTC P0300

Engine Misfire Detected

DTC P0301-P0306

Engine Misfire Detected

DTC P0313

Misfire Detected With Low Fuel Level

DTC P0318

Rough Road Sensor Circuit

DTC P0324

Knock Sensor (KS) Module Performance

DTC P0327 or P0332

Knock Sensor (KS) Circuit

DTC P0328 or P0333

Knock Sensor (KS) Circuit High Frequency

DTC P0335

CKP Sensor A Circuit Performance

DTC P0336

Crankshaft Position (CKP) Sensor A Performance

DTC P0337

Crankshaft Position (CKP) Sensor Circuit Low Duty Cycle

DTC P0338

Crankshaft Position (CKP) Sensor Circuit High Duty Cycle

DTC P0341

Camshaft Position (CMP) Sensor Performance

DTC P0342

Camshaft Position (CMP) Sensor Circuit Low Voltage

DTC P0343

Camshaft Position (CMP) Sensor Circuit High Voltage

DTC P0420 or P0430

Catalyst System Low Efficiency

DTC P0440

Evaporative Emission (EVAP) System

DTC P0442

Evaporative Emission (EVAP) System Small Leak Detected

DTC P0443

EVAP Purge Solenoid Valve 1 Control CKT

DTC P0444

Evaporative Emission (EVAP) Purge Solenoid Control Circuit Low Voltage

DTC P0445

Evaporative Emission (EVAP) Purge Solenoid Control Circuit High Voltage

DTC P0446

EVAP Vent Solenoid Valve Control System

DTC P0447

Evaporative Emission (EVAP) Vent Solenoid Control Circuit Low Voltage

DTC P0448

Evaporative Emission (EVAP) Vent Solenoid Control Circuit High Voltage

DTC P0449

Evaporative Emission (EVAP) Vent Solenoid Control Circuit

DTC P0451

Fuel Tank Pressure (FTP) Sensor Performance

DTC P0452

Fuel Tank Pressure Sensor Circuit Low Voltage

DTC P0453

Fuel Tank Pressure Sensor Circuit High Voltage

DTC P0461

Fuel Level Sensor Performance

DTC P0462

Fuel Level Sensor Circuit Low Voltage

DTC P0463

Fuel Level Sensor Circuit High Voltage

DTC P0480 or P0481

Cooling Fan Relay Control Circuit

DTC P0496

Evaporative Emission (EVAP) System Flow During Non-Purge

DTC P0500

Vehicle Speed Sensor (VSS) Circuit

DTC P0506 or P0507

Incorrect Idle Speed

DTC P0532 or P0533

Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit

DTC P0560

System Voltage

DTC P0562

System Voltage Low

DTC P0563

System Voltage High

DTC P0601

Control Module Read Only Memory (ROM)

DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681, or P1683

ECU Malfunction

DTC P0602

Control Module Not Programmed

DTC P0603

Control Module Long Term Memory Reset

DTC P0604

Control Module Random Access Memory (RAM)

DTC P0610

Control Module Vehicle Options Incorrect

DTC P0615

Starter Relay Control Circuit

DTC P0616

Starter Relay Control Circuit Low Voltage

DTC P0617

Starter Relay Control Circuit High Voltage

DTC P0625

Generator F-Terminal Circuit Low Voltage

DTC P0626

Generator F-Terminal Circuit High Voltage

DTC P0628

Fuel Pump Relay Control Circuit Low Voltage

DTC P0629

Fuel Pump Relay Control Circuit High Voltage

DTC P0638

Throttle Actuator Control (TAC) Command Performance

DTC P0645, P0646, or P0647

Air Conditioning (A/C) Clutch Relay Control Circuit

DTC P0650

Malfunction Indicator Lamp (MIL) Control Circuit

DTC P0660

Intake Manifold Tuning (IMT) Valve Solenoid Control Circuit

DTC P0661

Intake Manifold Tuning (IMT) Valve Solenoid Control Circuit Low Voltage

DTC P0662

Intake Manifold Tuning (IMT) Valve Solenoid Control Circuit High Voltage

DTC P0691 or P0693

Cooling Fan Relay Control Circuit Low Voltage

DTC P0692 or P0694

Cooling Fan Relay Control Circuit High Voltage

DTC P0700

Transmission Control Module (TCM) Requested MIL Illumination

DTC P0704

Clutch Switch Circuit

DTC P0711

TFT Sensor Circuit Range/Performance

DTC P0712

Transmission Fluid Temperature (TFT) Sensor Circuit Low Input

DTC P0713

Transmission Fluid Temperature (TFT) Sensor Circuit High Input

DTC P0716

Input Speed Sensor Circuit Intermittent

DTC P0717

Input Speed Sensor Circuit Low Input

DTC P0719

Brake Switch Circuit Low Input

DTC P0722

Output Speed Sensor Circuit Low Voltage

DTC P0723

Output Speed Sensor Circuit Intermittent

DTC P0724

Brake Switch Circuit High Input

DTC P0727

Engine Speed No Signal

DTC P0731

Incorrect 1st Gear Ratio

DTC P0732

Incorrect 2nd Gear Ratio

DTC P0733

Incorrect 3rd Gear Ratio

DTC P0734

Incorrect 4th Gear Ratio

DTC P0735

Incorrect 5th Gear Ratio

DTC P0741

TCC System Stuck Off

DTC P0742

TCC System Stuck On

DTC P0748

Pressure Control Solenoid Circuit Electrical

DTC P0751

1-2 Shift Solenoid Valve Performance - No First or Fourth Gear

DTC P0752

1-2 Shift Solenoid Valve Performance - No Second or Third Gear

DTC P0756

2-3 Shift Solenoid Valve Performance - No First or Second Gear

DTC P0757

2-3 Shift Solenoid Valve Performance - No Third or Fourth Gear

DTC P0761

4-5 Shift Solenoid (SS) Valve Performance - No Fourth Gear

DTC P0762

4-5 Shift Solenoid (SS) Valve Performance - No Fifth Gear

DTC P0850

Park/Neutral Position (PNP) Switch Circuit

DTC P1172

Fuel Transfer Pump Flow Insufficient

DTC P1531

A/C Temperature Sensor Circuit Malf

DTC P1551

Throttle Valve Rest Position Not Reached During Learn

DTC P1621

Control Module Long Term Memory Performance

DTC P1779

Torque Delivered Signal

DTC P1780

Torque Reduction Signal

DTC P1791

Throttle/Pedal Position Signal

DTC P1792

Engine Coolant Signal

DTC P1793

Wheel Speed Signal

DTC P1795

Throttle Actuator Control (TAC) System Signal

DTC P1815

Transmission Fluid Pressure (TFP) Valve Position Switch - Start in Wrong Range

DTC P1818

Transmission Fluid Pressure (TFP) Valve Position Switch Indicates Drive Without Drive Ratio

DTC P1820

Internal Mode Switch Circuit A Low

DTC P1822

Internal Mode Switch Circuit B High

DTC P1823

Internal Mode Switch Circuit P Low

DTC P1825

Internal Mode Switch - Invalid Range

DTC P1826

Internal Mode Switch C Circuit High Voltage

DTC P1831

Pressure Control (PC)/Shift Lock Solenoid Control Circuit Low Voltage

DTC P1832

Pressure Control (PC)/Shift Lock Solenoid Control Circuit High Voltage

DTC P1833

Torque Converter Clutch (TCC)/Shift Solenoid (SS) Control Circuit Low Voltage

DTC P1834

Torque Converter Clutch (TCC)/Shift Solenoid (SS) Control Circuit High Voltage

DTC P1842

1-2 Shift Solenoid Circuit Low Voltage

DTC P1843

1-2 Shift Solenoid Circuit High Voltage

DTC P1845

2-3 Shift Solenoid Circuit Low Voltage

DTC P1847

2-3 Shift Solenoid Circuit High Voltage

DTC P1864

4-5 Shift Solenoid (SS) Valve Control Circuit Low Voltage

DTC P1865

4-5 Shift Solenoid (SS) Valve Control Circuit High Voltage

DTC P1866

Torque Converter Clutch (TCC) Pulse Width Modulation (PWM) Solenoid Control Circuit Low Voltage

DTC P1867

Torque Converter Clutch (TCC) Pulse Width Modulation (PWM) Solenoid Control Circuit High Voltage

DTC P1868

Transmission Fluid Life

DTC P2008

Intake Manifold Runner Control (IMRC) Solenoid Control Circuit

DTC P2009

Intake Manifold Runner Control (IMRC) Solenoid Control Circuit Low Voltage

DTC P2010

Intake Manifold Runner Control (IMRC) Solenoid Control Circuit High Voltage

DTC P2066

Fuel Level Sensor 2 Performance

DTC P2067

Fuel Level Sensor 2 Circuit Low Voltage

DTC P2068

Fuel Level Sensor 2 Circuit High Voltage

DTC P2096 or P2098

Post Catalyst Fuel Trim System Low Limit

DTC P2097 or P2099

Post Catalyst Fuel Trim System High Limit

DTC P2100

Throttle Actuator Control (TAC) Motor Control Circuit

DTC P2101

Control Module Throttle Actuator Position Performance

DTC P2105

Throttle Actuator Control (TAC) System - Forced Engine Shutdown

DTC P2107

Throttle Actuator Control (TAC) Module Internal Circuit

DTC P2119

Throttle Closed Position Performance

DTC P2122

Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage

DTC P2123

Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage

DTC P2127

Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage

DTC P2128

Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage

DTC P2135

Throttle Position (TP) Sensor 1-2 Correlation

DTC P2138

Accelerator Pedal Position (APP) Sensor 1-2 Correlation

DTC P2176

Minimum Throttle Position Not Learned

DTC P2500

Generator L-Terminal Circuit Low Voltage

DTC P2501

Generator L-Terminal Circuit High Voltage

DTC U1000 and U1255

Class 2 Communication Malfunction

DTC U1001-U1254

Lost Communications With XXX

DTC U1300, U1301, or U1305

Class 2 Data Link Shorted

DTC U1713 or U1715

Loss of Front Door Module to Window Motor High Speed Comm.

DTC U1714 or U1716

Loss of Front Door Module to Window Motor Normal Speed Comm.

DTC U1800, U2104, or U2106

Controller Area Network (CAN) Bus Communication

DTC U2100

Controller Area Network (CAN) Bus Communication

DTC U2102

More Controllers On Bus Than Programmed

DTC U2105

Lost Communications With Engine Control System

DTC U2153

VICS ECU Communication Error


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