LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Pontiac >> 1998 >> Firebird Formula, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Tests W/Codes - 5.7L >> Self-Diagnostic System >> Trouble Code Definitions
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Trouble Code Definitions

TROUBLE CODE DEFINITION

Code No. Circuit Affected
P0101  MAF System Performance
P0102  MAF Sensor Circuit-Low Frequency
P0103  MAF Sensor Circuit-High Frequency
P0107  MAP Sensor Circuit-Low Voltage
P0108  MAP Sensor Circuit-High Voltage
P0112  IAT Sensor Circuit-Low Voltage
P0113  IAT Sensor Signal Voltage High
P0117  ECT Sensor Circuit Low Voltage
P0118  ECT Sensor Signal High Voltage
P0121  TP Sensor Circuit Insufficient Activity
P0122  TP Sensor Circuit-Low Voltage
P0123  TP Sensor Circuit-High Voltage
P0125  ECT Excessive Time To Closed Loop
P0131  HO2S Circuit Low Voltage-Bank 1, Sensor 1
P0132  HO2S Circuit High Voltage-Bank 1, Sensor 1
P0133  HO2S Slow Response-Bank 1, Sensor 1
P0134  HO2S Insufficient Activity-Bank 1, Sensor 1
P0135  HO2S Heater Circuit-Bank 1, Sensor 1
P0137  HO2S Circuit Low Voltage-Bank 1, Sensor 2
P0138  HO2S Circuit High Voltage-Bank 1, Sensor 2
P0140  HO2S Insufficient Activity-Bank 1, Sensor 2
P0141  HO2S Heater Circuit-Bank 1, Sensor 2
P0151  HO2S Circuit Voltage Low-Bank 2, Sensor 1
P0152  HO2S Circuit Voltage High-Bank 2, Sensor 1
P0153  HO2S Slow Response-Bank 2, Sensor 1
P0154  HO2S Circuit Insufficient Activity-Bank 2, Sensor 1
P0155  HO2S Heater Circuit-Bank 2, Sensor 1
P0157  HO2S Circuit Voltage Low-Bank 2, Sensor 2
P0158  HO2S Circuit Voltage High-Bank 2, Sensor 2
P0160  HO2S Insufficient Activity-Bank 2, Sensor 2
P0161  HO2S Heater Circuit-Bank 2, Sensor 2
P0171  Fuel Trim System Lean-Bank 1
P0172  Fuel Trim System Rich-Bank 1
P0174  Fuel Trim System Lean-Bank 2
P0175  Fuel Trim System Rich-Bank 2
P0230  Fuel Pump Control Circuit
P0300  Engine Misfire Detected
P0325  Knock Sensor Module Circuit
P0327  Knock Sensor Circuit-Front
P0332  Knock Sensor Circuit
P0335  CKP Sensor Circuit
P0341  CMP Sensor Circuit Performance
P0342  CMP Sensor Circuit Low
P0351 /P1351 Ignition Control No. 1 Circuit
P0352 /P1352 Ignition Control No. 2 Circuit
P0353  Ignition Control No. 3 Circuit
P0354  Ignition Control No. 4 Circuit
P0355  Ignition Control No. 5 Circuit
P0356  Ignition Control No. 6 Circuit
P0357  Ignition Control No. 7 Circuit
P0358  Ignition Control No. 8 Circuit
P0401  EGR System Flow Insufficient
P0404  EGR System Performance
P0405  EGR Pintle Position Sensor Circ. Low Voltage
P0410  AIR System
P0412  AIR Solenoid Relay Control Circuit
P0418  AIR Pump Relay Control Circuit
P0420  TWC System Low Efficiency-Bank 1
P0430  TWC Low Efficiency-Bank 2
P0440  EVAP System
P0442  EVAP System-Small Leak Detected
P0443  EVAP Canister Purge Sol. Circuit Fault
P0446  EVAP System Canister Vent Blocked
P0449  EVAP System Vent Sol. Circuit Fault
P0452  Tank Pressure Sensor Circuit Fault-Low Voltage
P0453  Tank Pressure Sensor Circuit Fault-High Voltage
P0461  Fuel Level Sensor Circuit Performance
P0462  Fuel Level Sensor Circuit-Voltage Low
P0463  Fuel Level Sensor Circuit-Voltage High
P0480  Cooling Fan Relay No. 1 Control Circuit
P0481  Cooling Fan Relay No. 2 & 3 Control Circuit
P0500  VSS Circuit
P0506  IAC System RPM Low
P0507  Idle Speed High
P0530  A/C Refrigerant Pressure Sensor Circuit
P0562  System Voltage Low
P0563  System Voltage High
P0601  PCM Memory
P0602  PCM Not Programmed
P0604  PCM RAM Performance
P0608  VSS Output Circuit
P0650  MIL Control Circuit
P0654  Engine Speed Output Circuit
P0656  Fuel Gauge Control Circuit
P0801 (1) Reverse Inhibit Solenoid Control Circuit
P0803 (1) Skip Shift Solenoid Control Circuit
P0804 (1) Skip Shift Light Control Circuit
P1111  IAT Sensor Circuit Intermittent High Voltage
P1112  IAT Sensor Circuit Intermittent Low Voltage
P1114  ECT Sensor Circuit Intermittent Low Voltage
P1115  ECT Sensor Circuit Intermittent High Voltage
P1121  TP Sensor Intermittently High Voltage
P1122  TP Sensor Intermittent Low Voltage
P1133  HO2S Insufficient Switching-Bank 1, Sensor 1
P1134  HO2S Transition Time Ratio-Bank 1, Sensor 1
P1153  HO2S Insufficient Switching-Bank 2, Sensor 1
P1154  HO2S Transition Time Ratio-Bank 2, Sensor 1
P1258  Engine Coolant Overtemp.-Fuel Disabled
P1336  CKP System Variation Not Learned
P1380  ABS DTC Rough Road Data Unstable
P1381  Misfire Detected, No EBCM/PCM/VCM Serial Data
P1404  EGR Valve Pintle Stuck Open
P1415  AIR System-Bank 1
P1416  AIR System-Bank 2
P1441  EVAP System Flow During Non-Purge
P1539  A/C Clutch Status Circuit Voltage High
P1545  A/C Clutch Relay Control Circuit
P1546  A/C Clutch Status Circuit Voltage Low
P1626  Loss Of Serial Communication W/Theft Deterrent Or Theft Deterrent System Fuel Enable Circuit
P1639  5-Volt Reference No. 2 Circuit
(1) Covered in entirety in appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS.