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NORMAL Mode Code Retrieval

  1. Connect scan tool to Data Link Connector (DLC) No. 3. See Figure. DLC No. 3 is located under left side of instrument panel. Turn ignition on with engine off. Turn scan tool on. Using scan tool manufacturer's instructions, check for DTCs and freeze-frame data.
  2. If scan tool displays UNABLE TO CONNECT TO VEHICLE, DLC No. 3 must be checked. See DLC NO. 3 INSPECTION  under SCAN TOOL PROBLEMS. If scan tool does not display UNABLE TO CONNECT TO VEHICLE, go to next step.
  3. Record any DTCs and freeze-frame data displayed for system diagnosis. If driveability problem exists and no DTCs are present, go to TROUBLE SHOOTING - NO CODES article for diagnosis by symptom.
  4. If any DTCs are present, perform appropriate diagnostic test in DIAGNOSTIC TESTS . See DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION  table. For more information on freeze-frame data, see FREEZE-FRAME DATA  under INTRODUCTION. For information on 2-trip detection logic codes, see TWO-TRIP DETECTION LOGIC  under INTRODUCTION.
  5. After repairs for DTC have been completed, DTCs must be cleared from ECM memory. See CLEARING DIAGNOSTIC TROUBLE CODES .
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC (1) Description
P0100  Mass Airflow (MAF) Sensor Circuit
P0101  Mass Airflow (MAF) Sensor Circuit Range/Performance Fault
P0110  Intake Air Temperature (IAT) Sensor Circuit
P0115  Engine Coolant Temperature (ECT) Circuit
P0116  Engine Coolant Temperature (ECT) Circuit Range/Performance Fault
P0120  Throttle (TP)/Pedal Position Sensor "A" Circuit Malfunction
P0121  Throttle (TP)/Pedal Position Sensor "A" Circuit Range/Performance Fault
P0125  Insufficient Coolant Temperature For Closed Loop Fuel Control
P0128  Thermostat Malfunction
P0130/P0150  Heated Oxygen Sensor Circuit Malfunction (Bank No. 1 & 2 Sensor No. 1)
P0133/P0153  Heated Oxygen Sensor Circuit Slow Response (Bank No. 1 & 2 Sensor No. 1)
P0135/P0155  Heated Oxygen Sensor Heater Circuit (Bank No. 1 & 2 Sensor No. 1)
P0136/P0156  Heated Oxygen Sensor Circuit Malfunction (Bank No. 1 & 2 Sensor No. 2)
P0141/P0161  Heated Oxygen Sensor Heater Circuit (Bank No. 1 & 2 Sensor No. 2)
P0171/P0172  System Too Lean/Rich (Bank No. 1)
P0174/P0175  System Too Lean/Rich (Bank No. 2)
P0300  Random Multiple Cylinder Misfire Detected
P0301-P0308  Cylinders No. 1-8 Misfire Detected
P0325/P0330  Knock Sensor Circuit Malfunction (Bank No. 1 & 2)
P0335  Crankshaft Position (CKP) Sensor "A" Circuit Malfunction
P0340  Camshaft Position (CMP) Sensor Circuit Malfunction
P0420/P0430  Catalyst System Efficiency Below Threshold (Bank No. 1 & 2)
P0440  EVAP System Malfunction
P0441  Incorrect EVAP System Purge Flow
P0446  EVAP System Vent Control Fault
P0450  EVAP System Pressure Sensor Malfunction
P0451  EVAP System Pressure Sensor Range/Performance Fault
P0500  Vehicle Speed Sensor (VSS) Malfunction
P0505  Idle Control System Malfunction
P0710(2) Transmission Fluid Temperature Sensor Fault
P0711(2) Transmission Fluid Temperature Sensor Circuit Range/Performance Fault
P0715(2) Turbine Speed Sensor Fault
P0750(2) Shift Solenoid Valve No. 1 Fault
P0753(2) Shift Solenoid Valve No. 1 Electrical Fault
P0755(2) Shift Solenoid Valve No. 2 Fault
P0758(2) Shift Solenoid Valve No. 2 Electrical Fault
P0760(2) Shift Solenoid Valve No. 3 Fault
P0763(2) Shift Solenoid Valve No. 3 Electrical Fault
P0768(2) Shift Solenoid Valve No. 4 Electrical Fault
P0770(2) Lock-Up Solenoid Fault
P1120  Accelerator Pedal Position Sensor Circuit Malfunction
P1121  Accelerator Pedal Position Sensor Circuit Malfunction
P1125  Throttle Control Motor Circuit Malfunction
P1127  Electronic Throttle Control System (ETCS) Actuator Power Source Circuit Malfunction
P1128  Throttle Control Motor Lock Malfunction
P1129  Electronic Throttle Control System (ETCS) Malfunction
P1200  Fuel Pump Relay/ECU Circuit Malfunction
P1300, P1305, P1310, P1315, P1320, P1325, P1330 & P1340  Ignitor Circuit Malfunction No. 1-8
P1335  Crankshaft Position (CKP) Sensor
P1345/P1350  Variable Valve Timing (VVT) Sensor Circuit Malfunction
P1346/P1351  Variable Valve Timing (VVT) Circuit Range/Performance Fault
P1349/P1354  Variable Valve Timing (VVT) System Malfunction
P1520  Stoplight Switch Signal Malfunction
P1600  ECM Batt Malfunction
P1633  Electronic Throttle Control System (ETCS) Circuit ECM Malfunction
P1645  Body ECU Malfunction
P1656/P1663  Oil Control Valve (OCV) Circuit Malfunction
P1755(2) Shift Solenoid Valve SLU Fault
P1760(2) Shift Solenoid Valve SLT Fault
P1765(2) Shift Solenoid Valve SLN Fault
P1780  Park/Neutral Position Switch Malfunction
B2798(3) Immobilizer System Malfunction
(1) Some codes are two-trip detection logic code(s). For more information, see DETECTION LOGIC  under INTRODUCTION.
(2) These codes only apply to electronically controlled transmissions. For testing procedures, see appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS.
(3) MIL will not illuminate. For testing procedures, see appropriate ENGINE IMMOBILIZER SYSTEMS article in ACCESSORIES & EQUIPMENT.
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