Diagnostic Trouble Code (DTC) List Definitions
This information refers to Domestic and Export calibration packages. Use the DTCs that only apply to your specific RPO (Regular Production Option). Each DTC is directly related to a diagnostic test. The DTC sets based upon the DTC's individual running and setting criteria.
The following are the types of DTCs and their code characteristics:
Type A
| • | Emissions related |
| • | Requests illumination of the MIL on the first trip with a fail |
| • | Stores a History DTC on the first trip with a fail |
| • | Stores a Freeze Frame on the first trip with a fail |
| • | Stores a Failure Record |
| • | Updates the Failure Record the first time the test fails each ignition cycle |
Type B
| • | Emissions related |
| • | The code is enabled after the first trip with a fail |
| • | The code is disabled if the second consecutive trip passes |
| • | Requests illumination of the MIL on the second consecutive trip with a fail |
| • | Stores a History DTC on the second consecutive trip with a fail |
| • | Stores a Freeze Frame on the second consecutive trip with a fail |
| • | Stores a Failure Record when the first test fails |
| • | Updates the Failure Record the first time the test fails each ignition cycle |
Type C1
| • | Non-emissions related |
| • | Requests illumination of the Service Lamp (not the MIL), or the service message on the first trip with a fail |
| • | Stores a History DTC on the first trip with a fail |
| • | Does not store a Freeze Frame |
| • | Stores a Failure Record when the test fails |
| • | Updates the Failure Record the first time the test fails each ignition cycle |
Type C0
| • | Non-emissions related |
| • | Does not request illumination of any lamps |
| • | Stores a History DTC on the first trip with a fail |
| • | Does not store a Freeze Frame |
| • | Stores a Failure Record when the test fails |
| • | Updates the Failure Record the first time the test fails each ignition cycle |
Type X
| • | Diagnostics that are coded in the software, but will not run for non-OBD II export vehicles |
| • | Some domestic vehicles use DTCs |
| • | Even though codes are not stored, the DTC Type Table can still be used as a resource when diagnosing problems with systems that are associated with the type X DTCs |
If a system is malfunctioning and the associated DTC has been disabled (Type X), it may be beneficial to use the diagnostic table as a guide to aid in diagnosis. Many of the DTC tables include a functional check of the system that may pinpoint a problem. However, it is important to remember that the DTC tables are specifically designed for use only when a DTC is set. Therefore, a thorough understanding of the normal operation of the system being diagnosed is necessary and use of the tables for this purpose is at the discretion of the technician.
Diagnostic Trouble Code (DTC) List DTC Type Table
DTC | Description | Federal and California Emissions, (NA3, NA5, NB6, NB7, NC1, NF2) Less than 8600 GVW, 4.3L L35 (Vin W) and LF6 (Vin X) |
|---|---|---|
P0101 | Mass Air Flow (MAF) System Performance | B |
P0102 | Mass Air Flow (MAF) Sensor Circuit Low Frequency | B |
P0103 | Mass Air Flow (MAF) Sensor Circuit High Frequency | B |
P0106 | Manifold Absolute Pressure (MAP) Sensor System Performance | B |
P0107 | Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage | B |
P0108 | Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage | B |
P0112 | Intake Air Temperature (IAT) Sensor Circuit Low Voltage | B |
P0113 | Intake Air Temperature (IAT) Sensor Circuit High Voltage | B |
P0117 | Engine Coolant Temperature (ECT) Sensor Low Voltage | B |
P0118 | Engine Coolant Temperature (ECT) Sensor High Voltage | B |
P0121 | Throttle Position (TP) Sensor Performance | B |
P0122 | Throttle Position (TP) Sensor Circuit Low Voltage | B |
P0123 | Throttle Position (TP) Sensor Circuit High Voltage | B |
P0125 | Engine Coolant Temperature (ECT) Excessive Time To Closed Loop | B |
P0131 | Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 1 Sensor 1 | B |
P0132 | Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1 Sensor 1 | B |
P0133 | Heated Oxygen Sensor (HO2S) Slow Response Bank 1 Sensor 1 | B |
P0134 | Heated Oxygen Sensor (HO2S) Circuit Insufficient Activity Bank 1 Sensor 1 | B |
P0135 | Heated Oxygen Sensor (HO2S) Heater Circuit Bank 1 Sensor 1 | B |
P0143 | Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 1 Sensor 3 | B |
P0144 | Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1 Sensor 3 | B |
P0146 | Heated Oxygen Sensor (HO2S) Insufficient Activity Bank 1 Sensor 3 | B |
P0147 | Heated Oxygen Sensor (HO2S) Heater Circuit Bank 1 Sensor 3 | B |
P0151 | Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 2 Sensor 1 | B |
P0152 | Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 2 Sensor 1 | B |
P0153 | Heated Oxygen Sensor (HO2S) Slow Response Bank 2 Sensor 1 | B |
P0154 | Heated Oxygen Sensor (HO2S) Circuit Insufficient Activity Bank 2 Sensor 1 | B |
P0155 | Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 1 | B |
P0171 | Fuel Trim System Lean Bank 1 | B |
P0172 | Fuel Trim System Rich Bank 1 | B |
P0174 | Fuel Trim System Lean Bank 2 | B |
P0175 | Fuel Trim System Rich Bank 2 | B |
P0300 | Engine Misfire Detected | B |
P0325 | Knock Sensor (KS) Module Circuit | B |
P0327 | Knock Sensor (KS) Noise Channel Low Voltage | B |
P0336 | Crankshaft Position (CKP) Sensor Circuit Performance | B |
P0337 | Crankshaft Position (CKP) Sensor Circuit Low Frequency | B |
P0338 | Crankshaft Position (CKP) Sensor Circuit High Frequency | C |
P0339 | Crankshaft Position (CKP) Sensor Circuit Intermittent | B |
P0340 | Camshaft Position (CMP) Sensor Circuit | B |
P0341 | Camshaft Position (CMP) Circuit Performance | B |
P0401 | Exhaust Gas Recirculation (EGR) System Flow Insufficient | A |
P0404 | Exhaust Gas Recirculation (EGR) Valve Open Pintle Position | B |
P0405 | Exhaust Gas Recirculation (EGR) Pintle Position Circuit Low Volage | B |
P0410 | AIR Injection System Malfunction (LEV Vehicles Only) | B |
P0420 | Three-Way Catalytic Converter (TWC) System Low Efficiency Bank 1 | A |
P0440 | Evaporative Emissions (EVAP) System | A |
P0442 | Evaporative Emissions (EVAP) Control System Small Leak Detected | A |
P0446 | Evaporative Emissions (EVAP) Vent Valve Performance | A |
P0452 | Fuel Tank Pressure Sensor Circuit Low Voltage | B |
P0453 | Fuel Tank Pressure Sensor Circuit High Voltage | B |
P0461 | Fuel Level Sensor Circuit Performance | C |
P0462 | Fuel Level Sensor Circuit Low Voltage | C |
P0463 | Fuel Level Sensor Circuit High Voltage | C |
P0500 | Vehicle Speed Sensor (VSS) Circuit | B |
P0506 | Idle Control System Low RPM | B |
P0507 | Idle Control System High RPM | B |
P0601 | Vehicle Control Module (VCM) Memory | A |
P0602 | Vehicle Control Module (VCM) Not Programmed | A |
P0603 | Vehicle Control Module (VCM) Memory Reset | A |
P0604 | Vehicle Control Module (VCM) Random Access Memory (RAM) | A |
P0605 | Vehicle Control Module (VCM) Read Only Memory (ROM) | A |
P0704 | Clutch Switch Circuit (M/T) | B |
P1106 | Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage | C |
P1107 | Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage | C |
P1111 | Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage | C |
P1112 | Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage | C |
P1114 | Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage | C |
P1115 | Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage | C |
P1121 | Throttle Position (TP) Sensor Circuit Intermittent High Voltage | C |
P1122 | Throttle Position (TP) Sensor Circuit Intermittent Low Voltage | C |
P1133 | Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 1 Sensor 1 | B |
P1134 | Heated Oxygen Sensor (HO2S) Transition Time Ratio Bank 1 Sensor 1 | B |
P1153 | Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 2 Sensor 1 | B |
P1154 | Heated Oxygen Sensor (HO2S) Transition Time Ratio Bank 2 Sensor 1 | B |
P1336 | Crankshaft Position (CKP) System Variation Not Learned (CASE) | A |
P1345 | Crankshaft Position (CKP)/Camshaft Position (CMP) Correlation | A |
P1351 | Ignition Control (IC) Circuit High Voltage | A |
P1361 | Ignition Control (IC) Circuit Low Voltage | A |
P1380 | Electronic Brake Control Module (EBCM) DTC Rough Road Data Unusable | C |
P1381 | Misfire Detected -- No Electronic Brake Control Module (EBCM)/Vehicle Control Module (VCM) Serial Data | C |
P1404 | Exhaust Gas Recirculation (EGR) Valve Closed Pintle Position | A |
P1415 | Secondary Air Injection Malfunction Bank 1 (LEV Vehicles Only) | B |
P1416 | Secondary Air Injection Malfunction Bank 2 (LEV Vehicles Only) | B |
P1441 | Evaporative Emissions (EVAP) System Flow During Non-Purge | B |
P1508 | Idle System Too Low, IAC Not Responding | B |
P1509 | Idle System Too High, IAC Not Responding | B |
P1621 | Vehicle Control Module (VCM) EEPROM Performance | C |
P1626 | Loss of Serial Communication with Vehicle Theft Deterrent (VTD) | C |
P1631 | Theft Deterrent Password Incorrect | C |
Transmission DTCs
VCM DTCs that are related to transmission operation are not located in this section. Transmission DTCs usually have the number prefexis P07xx and P18xx. For Transmission DTC types, refer to Transmission.
