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Diagnostic Trouble Code Definitions

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 GMC Savana, 2002 Chevrolet Chevy Express, 2001 GMC Savana Special, 2001 GMC Savana Camper Special, and 2001 GMC Savana. However, it is still accessible from the selected car via links, so may be relevant.
BODY CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC Description Perform Test
B0016 Right Front/Passenger Frontal Deployment Loop (Single Stage Or Stage 1) Resistance Low (1)
B0017 Right Front/Passenger Frontal Deployment Loop (Single Stage Or Stage 1) Open (1)
B0018 Right Front/Passenger Frontal Deployment Loop (Single Stage Or Stage 1) Short To Ground/Voltage Out Of Range (1)
B0022 Left Front/Driver Frontal Deployment Loop (Single Stage Or Stage 1) Resistance Low (1)
B0024 Left Front/Driver Frontal Deployment Loop (Single Stage Or Stage 1) Short To Ground/Voltage Out Of Range (1)
B0026 Left Front/Driver Frontal Deployment Loop (Single Stage Or Stage 1) Open (1)
B0035 Front End Discriminating Sensor Signal Low (1)
B0036 Front End Discriminating Sensor Signal High (1)
B0041 Left Front/Driver Side Deployment Loop Open (1)
B0051 Deployment Commanded (1)
B0053 Deployment Commanded With Loop Malfunctions Present (1)
B0688 Security Indicator Circuit Fault B0688 
B1000 Module Malfunction B1000 
B1001 Vehicle Identification Number (VIN) Mismatch (1)
B1004 Keep Alive Memory Data Lost B1004 
B1007 Checksum Value Error DTC B1007 
B1009 EEPROM Value Error B1009 
B2947 Passlock(tm) Sensor Power Circuit Low (2)
B2948 Passlock(tm) Sensor Power Circuit High (2)
B2957 Passlock(tm) Sensor Data Circuit Low (2)
B2958 Passlock(tm) Sensor Data Circuit High (2)
B2960 Passlock(tm) Sensor Data Incorrect But Valid (2)
B3031 Security System Controller in Learn Mode (2)
B3033 Security System Indicates Tamper (2)
C0221-C0227 Wheel Speed Sensor Malfunction (3)
C0229 Front Wheel Speed Sensor Signals Erratic (3)
C0235-C0237 Or P1504 Vehicle Speed Sensor Signal Conversion Fault (3)
C0238 Wheel Speed Input Variation Error (3)
C0241-C0254 Electronic Brake Control Module Internal Fault (3)
C0265 Or C0266 Electronic Brake Control Module Internal Fault (3)
C0267 & C0268 Brake System Pump Circuit Fault (3)
C0269 & C0274 Brake System Solenoid Valve Fault (3)
C0271-C0273 Electronic Brake Control Module Internal Fault (3)
C0281 Brake Switch Open/Short (3)
C0286 ABS Indicator Failure Control Circuit Low (3)
C0288 Pressure Differential Sensor Signal Circuit High (3)
C0559 Passlock(tm) Module Internal Memory Failure (2)
PXXXX Powertrain Control Module Fault (4)
P0218 Transmission Fluid Overtemperature (5)
P0461 No Fuel Level Sensor Signal Variation (6)
P0462 Fuel Level Voltage Signal Voltage Low (6)
P0463 Fuel Level Voltage Signal Voltage High (6)
P0502 VSS Circuit - Low Input (5)
P0503 VSS Circuit - Intermittent (5)
P0560 System Voltage - High/Low (5)
P0567 Resume/Accel Switch Circuit (7)
P0568 Set/Coast Switch Circuit (7)
P0571 TCC/Brake Switch Circuit (7)
P0608 Vehicle Speed Signal Mismatch (6)
P0711 TFT Sensor Circuit - Range/Performance (5)
P0712 TFT Sensor Circuit - Low Input (5)
P0713 TFT Sensor Circuit - High Input (5)
P0716 ISS Sensor Circuit - Intermittent (5)
P0717 ISS Sensor Circuit - Low Input (5)
P0719 Brake Switch Circuit - Low Input (5)
P0722 OSS Sensor Circuit - Low Input (5)
P0723 OSS Sensor Circuit - Intermittent (5)
P0724 Brake Switch Circuit - High Input (5)
P0730 Incorrect Gear Ratio (5)
P0740 TCC Enable Solenoid Circuit - Electrical Malfunction (5)
P0741 TCC System - Stuck Off (5)
P0742 TCC System - Stuck On (5)
P0748 PC Solenoid Circuit - Electrical Malfunction (5)
P0751 1-2 Shift Solenoid Valve Performance - No 1st Or 4th Gear (5)
P0752 1-2 Shift Solenoid Valve Performance - No 2nd Or 3rd Gear (5)
P0753 1-2 Shift Solenoid Circuit - Electrical Malfunction (5)
P0756 2-3 Shift Solenoid Valve Performance (5)
P0757 2-3 Shift Solenoid Valve Performance - No 3rd Or 4th Gear (5)
P0757 2-3 Shift Solenoid Valve Performance - No 3rd Or 4th Gear (5)
P0758 2-3 Shift Solenoid Valve Circuit - Electrical Malfunction (5)
P0785 3-2 Shift Solenoid Circuit - Electrical Malfunction (5)
P1626 Powertrain Control Module Unable To Learn Passlock(tm) Module Password (2)
P1630 Powertrain Control Module Unable To Learn Passlock(tm) Module Password (2)
P1631 Invalid Password Received (2)
P1665 Fuel Level Signal Circuit Malfunction (6)
P1810 TFP Manual Valve Position Switch - Circuit Malfunction (5)
P1811 Maximum Adapt & Long Shift (5)
P1860 TCC PWM Solenoid Circuit - Electrical Malfunction (5)
P1870 Transmission Component Slipping (5)
P1875 4WD Low Switch Circuit - Electrical Malfunction (5)
U1000 & U1255  Class 2 Communication Malfunction (8)
U1001-U1254  Loss of XXX Communications (8)
U1300  Class 2 Data Link Low (8)
U1301  Class 2 Data Link High (8)
(1) For information on air bag DIAGNOSIS & TESTING or DISPOSAL PROCEDURES, see lemon-25(R) AIR BAG SERVICE & REPAIR MANUAL, DOMESTIC & IMPORTED MODELS.
(2) Perform appropriate diagnostic procedure. See ANTI-THEFT SYSTEMS - CHEVY EXPRESS & SAVANA article.
(3) Perform appropriate diagnostic procedure. See appropriate ANTI-LOCK BRAKES article in BRAKES.
(4) For Pxxxx Codes Not Listed, Perform appropriate diagnostic procedure. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
(5) Perform appropriate diagnostic procedure. See appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS.
(6) Perform appropriate diagnostic procedure. See appropriate ANALOG INSTRUMENT PANELS article.
(7) Perform appropriate diagnostic procedure. See appropriate CRUISE CONTROL SYSTEMS - CHEVY EXPRESS & SAVANA article.
(8) Perform appropriate test under DIAGNOSTIC TESTS  .
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