CHECK Mode Code Retrieval (Lexus Scan Tool Only)
WARNING: This page is about a different car, the 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
- Ensure vehicle battery is fully charged (at least 11 volts). Apply parking brake. Shift transmission/transaxle into Neutral (M/T) or Park (A/T). Turn A/C and all accessories off. Ensure throttle is in idle position.
- Turn ignition off. Connect scan tool to Data Link Connector (DLC) No. 3. See Figure. DLC No. 3 connector is located under left side of instrument panel. Turn ignition on with engine off. Turn scan tool on.
- Switch scan tool from NORMAL mode to CHECK mode. CHECK mode is operational if MIL on instrument cluster flashes. Start engine. Ensure MIL goes off. Try to simulate conditions of driveability complaint described by customer.NOTE: If ignition is turned from ON to ACC or OFF position, all DTCs and freeze-frame data will be erased. DO NOT switch modes until all DTCs and freeze-frame data are recorded.
- Record any DTCs and freeze-frame data displayed for system diagnosis. If driveability problem exists and no codes are present, go to TROUBLE SHOOTING - NO CODES article for diagnosis by symptom.
- If any DTCs are present, perform appropriate circuit test. 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.
- After repairs for DTC have been completed, DTC 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 Fault P0101 Mass Airflow (MAF) Sensor Circuit Range/Performance Fault P0110 Intake Air Temperature (IAT) Sensor Circuit P0115 Engine Coolant Temperature (ECT) Sensor Circuit P0116 Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Fault P0120 Throttle Position (TP)/Pedal Position Sensor Switch "A" Circuit Malfunction P0121 Throttle Position (TP)/Pedal Position Sensor Switch "A" Circuit Range/Performance Fault P0125 Insufficient Coolant Temperature For Closed Loop Fuel Control P0128 Thermostat Malfunction P0136 Heated Oxygen Sensor Circuit Malfunction(Bank 1, Sensor 2) P0141 Heated Oxygen Sensor Heater Circuit (Bank 1, Sensor 2) P0156 Heated Oxygen Sensor Circuit Malfunction (Bank 2, Sensor 2) P0161 Heated Oxygen Sensor Heater Circuit (Bank 2, Sensor 2) P0171 System Too Lean/Rich Bank No. 1 P0172 System Too Lean/Rich Bank No. 1 P0174 System Too Lean/Rich Bank No. 2 P0175 System Too Lean/Rich Bank No. 2 P0300 Random Multiple Cylinder Misfire Detected P0301-P0306 Cylinders No. 1-6 Misfire Detected P0325 Knock Sensor No. 1 Circuit Malfunction P0330 Knock Sensor No. 2 Circuit Malfunction P0335 Crankshaft Position (CKP) Sensor "A" Circuit Malfunction P0340 (2) Variable Valve Timing (VVT) Sensor Circuit P0420 Catalyst System Efficiency Below Threshold (Bank No. 1) P0430 Catalyst System Efficiency Below Threshold (Bank No. 2) P0440 EVAP System Malfunction P0441 Incorrect EVAP Purge Flow P0442 EVAP System Leak Detected (Small Leak) P0446 EVAP Vent Control Fault P0450 EVAP Pressure Sensor Malfunction P0451 EVAP Pressure Sensor Range/Performance Fault P0500 Vehicle Speed Sensor (VSS) Malfunction P0505 Idle Control System Malfunction P0710(3) Transmission Fluid Temperature Sensor Fault P0750(3) Shift Solenoid Valve No. 1 Fault P0753(3) Shift Solenoid Valve No. 1 Electrical Fault P0755(3) Shift Solenoid Valve No. 2 Fault P0758(3) Shift Solenoid Valve No. 2 Electrical Fault P0765(3) Shift Solenoid Valve No. 4 Fault P0768(3) Shift Solenoid Valve No. 4 Electrical Fault P0770(3) Lock-Up Solenoid Fault P0773(3) Lock-Up Solenoid Circuit Electrical Fault P1130 Air/Fuel Sensor Circuit Range/Performance Fault (Bank 1 Sensor 1) P1133 Air/Fuel Sensor Circuit Response Malfunction (Bank 1 Sensor 1) P1135 Air/Fuel Sensor Heater Circuit Malfunction (Bank 1 Sensor 1) P1150 Air/Fuel Sensor Circuit Range/Performance Fault (Bank 2 Sensor 1) P1153 Air/Fuel Sensor Circuit Response Malfunction (Bank 2 Sensor 1) P1155 Air/Fuel Sensor Heater Circuit Malfunction (Bank 2 Sensor 1) P1300, P1305, P1310, P1315, P1320, P1325 Ignitor Circuit Malfunction P1335 Crankshaft Position Sensor Circuit Malfunction (While Engine Running) P1346 (2) Variable Valve Timing (VVT)/Crankshaft Position Sensor Circuit Range/Performance Fault (Bank No. 1) P1349 (2) Variable Valve Timing (VVT) System Malfunction (Bank No. 1) P1350 Variable Valve Timing (VVT)/Camshaft Position Sensor Circuit Fault (Bank No. 2) P1351 (2) Variable Valve Timing (VVT)/Crankshaft Position Sensor Circuit Range/Performance Fault (Bank No. 2) P1354 (2) Variable Valve Timing (VVT) System Malfunction (Bank No. 2) P1520 Stoplight Switch Signal Malfunction P1600 ECM Batt Malfunction P1633 ECM Malfunction P1656 Oil Control Valve (OCV) Malfunction (Bank No. 1) P1663 Oil Control Valve (OCV) Malfunction (Bank No. 2) P1725(3) Input Turbine Speed Sensor Circuit Fault P1730(3) Counter Gear Speed Sensor Circuit Fault P1760(3) Shift Solenoid Valve SLT Fault P1780 Park/Neutral Position Switch Malfunction B2795(4) Unmatched Key Code B2796(4) No Communication In Immobilizer System B2797(4) Communication Malfunction No. 1 B2798(4) Communication Malfunction No. 2 (1) Some codes are two-trip detection logic code(s). For more information, see DETECTION LOGIC under INTRODUCTION. (2) May also be referred to as camshaft position sensor. (3) These codes only apply to electronically controlled transmissions. For testing procedures, see appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS. (4) MIL will not illuminate. For testing procedures, see ENGINE IMMOBILIZER SYSTEMS - ES300 article in ACCESSORIES & EQUIPMENT.