Without Speed Density Update

Code 13 Oxygen Sensor Circuit (Open Circuit)

Code 14 Coolant Temperature Sensor Circuit (High Temperature Indicated)

Code 15 Coolant Temperature Sensor Circuit (Low Temperature Indicated)

Code 21 Throttle Position Sensor (TPS) Circuit (Signal Voltage High)

Code 22 Throttle Position Sensor (TPS) Circuit (Signal Voltage Low)

Code 23 Manifold Air Temperature (MAT) Sensor Circuit (Low Temperature Indicated)

Code 24 Vehicle Speed Sensor (VSS) Circuit

Code 25 Manifold Air Temperature (MAT) Sensor Circuit (High Temperature Indicated)

Code 33 Mass Air Flow (MAF) Sensor Circuit (GM/SEC High)

Code 34 Mass Air Flow (MAF) Sensor Circuit (GM/SEC Low)

Code 35 Idle Speed Control (ISC) Circuit

Code 41 Cylinder Select Error (Faulty or Incorrect Mem-Cal)

Code 42 Electronic Spark Timing (EST) Circuit

Code 43 Electronic Spark Control (ESC) Circuit

Code 44 Oxygen Sensor Circuit (Lean Exhaust Indicated)

Code 45 Oxygen Sensor Circuit (Rich Exhaust Indicated)

Code 54 Fuel Pump Circuit (Low Voltage)

Code 51 Faulty Mem-Cal

Code 52 Fuel CalPak (Part of Mem-Cal) Fault

Code 53 System Over Voltage

Code 61 Degraded Oxygen Sensor

Code 63 Manifold Absolute Pressure (MAP) Sensor Circuit (Signal Voltage High)

Code 64 Manifold Absolute Pressure (MAP) Sensor Circuit (Signal Voltage Low)