Diagnostic Trouble Code (DTC) List. Oldsmobile Shelby Series 1 1999

For 1990-2009 cars

The service information contained in this manual refers to the Federal calibration package. The DTC Type table information refers to domestic calibration packages. Certain DTCs have been changed from type A to type C or, in some cases, type X. When a type A diagnostic fails, a DTC is set immediately and the Malfunction Indicator Lamp (MIL) is illuminated. When a type B DTC diagnostic fails, the Malfunction Indicator Lamp (MIL) will illuminate if the fault is present after two consecutive ignition cycles. A type C DTC will set after one failure and be stored in history but will not illuminate the Malfunction Indicator Lamp (MIL). Type X DTCs have been turned off (the diagnostic does not run, no codes are stored, and the Malfunction Indicator Lamp (MIL) will not illuminate.

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) Type Table

DTC | Description | Domestic | Illuminate MIL
--- | --- | --- | ---
P0101 | Mass Air Flow (MAF) System Performance | C | No
P0102 | Mass Air Flow (MAF) Sensor Circuit Low Frequency | B | Yes
P0103 | Mass Air Flow (MAF) Sensor Circuit High Frequency | B | Yes
P0107 | Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage | B | Yes
P0108 | Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage | B | Yes
P0112 | Intake Air Temperature (IAT) Sensor Circuit Low Voltage | B | Yes
P0113 | Intake Air Temperature (IAT) Sensor Circuit High Voltage | B | Yes
P0117 | Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage | B | Yes
P0118 | Engine Coolant Temperature (ECT) Sensor Circuit High Voltage | B | Yes
P0121 | TP Sensor Circuit Insufficient Activity | C | No
P0122 | TP Sensor Circuit Low Voltage | B | Yes
P0123 | TP Sensor Circuit High Voltage | B | Yes
P0125 | Engine Coolant Temperature (ECT) Excessive Time To Closed Loop Fuel Control | C | No
P0131 | Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 1 Sensor 1 | B | Yes
P0132 | Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1 Sensor 1 | B | Yes
P0133 | Heated Oxygen Sensor (HO2S) Slow Response Bank 1 Sensor 1 | C | No
P0134 | Heated Oxygen Sensor (HO2S) Circuit Insufficient Activity Bank 1 Sensor 1 | B | Yes
P0135 | Heated Oxygen Sensor (HO2S) Heater Circuit Bank 1 Sensor 1 | C | No
P0137 | Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 1 Sensor 2 | B | Yes
P0138 | Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1 Sensor 2 | B | Yes
P0140 | Heated Oxygen Sensor (HO2S) Circuit Insufficient Activity Bank 1 Sensor 2 | B | Yes
P0141 | Heated Oxygen Sensor (HO2S) Heater Circuit Bank 1 Sensor 2 | C | No
P0151 | Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 2 Sensor 1 | B | Yes
P0152 | Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 2 Sensor 1 | B | Yes
P0153 | Heated Oxygen Sensor (HO2S) Slow Response Bank 2 Sensor 1 | C | No
P0154 | Heated Oxygen Sensor (HO2S) Circuit Insufficient Activity Bank 2 Sensor 1 | B | Yes
P0155 | Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 1 | C | No
P0157 | Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 2 Sensor 2 | B | Yes
P0158 | Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 2 Sensor 2 | B | Yes
P0160 | Heated Oxygen Sensor (HO2S) Circuit Insufficient Signal Activity Bank 2 Sensor 2 | B | Yes
P0161 | Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 2 | C | No
P0171 | Fuel Trim System Lean Bank 1 | B | Yes
P0172 | Fuel Trim System Rich Bank 1 | B | Yes
P0174 | Fuel Trim System Lean Bank 2 | B | Yes
P0175 | Fuel Trim System Rich Bank 2 | B | Yes
P0200 | Injector Control Circuit | C | No
P0230 | Fuel Pump Relay Control Circuit | B | Yes
P0300 | Engine Misfire Detected (MIL will flash during misfire catalyst damage) | B | Yes
P0322 | IC Module 4X Reference Circuit No Frequency | C | Yes
P0325 | Knock Sensor (KS) System | C | Yes
P0327 | Knock Sensor (KS) Circuit Low Voltage | C | Yes
P0340 | IC Module Cam Reference Circuit No Frequency | B | Yes
P0371 | IC Module 24X Reference Circuit Too Many Pulses | A | Yes
P0372 | IC Module 24X Reference Circuit Missing Pulses | A | Yes
P0420 | TWC System Low Efficiency Bank 1 | C | No
P0430 | TWC System Low Efficiency Bank 2 | C | No
P0440 | EVAP System | C | No
P0442 | EVAP Control System Small Leak Detected | X | No
P0443 | EVAP Purge Solenoid Control Circuit | C | No
P0446 | EVAP Canister Vent Blocked | C | No
P0449 | EVAP Canister Vent Solenoid Valve Control Circuit | C | No
P0452 | Fuel Tank Pressure Sensor Circuit Low Voltage | C | Yes
P0453 | Fuel Tank Pressure Sensor Circuit High Voltage | C | No
P0461 | Fuel Level Sensor Circuit Performance | C | No
P0462 | Fuel Level Sensor Circuit Low Voltage | C | No
P0463 | Fuel Level Sensor Circuit High Voltage | C | No
P0480 | FC Relay 1 Control Circuit | C | No
P0481 | FC Relay 2 and 3 Control Circuit | C | No
P0500 | VSS Circuit | B | Yes
P0506 | Idle Speed Low | B | Yes
P0507 | Idle Speed High | B | Yes
P0562 | System Voltage Low | C | No
P0563 | System Voltage High | C | No
P0601 | Control Module Read Only Memory (ROM) | A | No
P0602 | Control Module Not Programmed | A | No
P0604 | Control Module Random Access Memory (RAM) | A | No
P0608 | VSS Output Circuit | C | No
P0645 | A/C Clutch Relay Control Circuit | C | No
P0654 | Engine Speed Output Circuit | C | No
P0650 | Malfunction Indicator Lamp (MIL) Control Circuit | B (No MIL) | No
P0704 | Clutch Switch Circuit (M/T only) | C | No
P1111 | Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage | C | No
P1112 | Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage | C | No
P1114 | ECT Sensor Circuit Intermittent Low Voltage | C | No
P1115 | ECT Sensor Circuit Intermittent High Voltage | C | No
P1121 | TP Sensor CKT Intermittent High Voltage | C | No
P1122 | TP Sensor CKT Intermittent Low Voltage | C | No
P1133 | Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 1 Sensor 1 | C | No
P1134 | Heated Oxygen Sensor (HO2S) Transition Time Ratio Bank 1 Sensor 1 | C | No
P1153 | Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 2 Sensor 1 | C | No
P1154 | Heated Oxygen Sensor (HO2S) Transition Time Ratio Bank 2 Sensor 1 | C | No
P1320 | IC Module 4X Ref. Circuit Intermittent Pulses | A | Yes
P1323 | 24X Reference Circuit Low Frequency | A | Yes
P1336 | CKP System Variation Not Learned | A | Yes
P1350 | Ignition Control System | A | Yes
P1361 | IC Control Low Voltage | A | Yes
P1370 | IC Module 4X Reference Too Many Passes | A | Yes
P1371 | IC Module 4X Reference Too Few Passes | A | Yes
P1377 | IC Module CAM Pulse to 4X Reference Pulses Comparison | A | Yes
P1391 | Rough Road Sensor Performance | C | No
P1392 | Rough Road Sensor Circuit Low Voltage | C | No
P1393 | Rough Road Sensor Circuit High Voltage | C | No
P1441 | Evaporative Emissions (EVAP) System Flow During Non-Purge | C | No
P1626 | Theft Deterrent System Fuel Enable Circuit | C | No
P1630 | Theft Deterrent System PCM in Learn Mode | C | No
P1631 | Theft Deterrent System Password Incorrect | C | No
P1635 | 5 Volt Reference #1 Circuit | B | Yes
P1639 | 5 Volt Reference #2 Circuit | B | Yes