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Home >> Lexus >> 2003 >> RX 300 FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Self-Diagnostic System >> Retrieving Diagnostic Trouble Codes >> CHECK Mode Code Retrieval (Lexus Scan Tool Only)
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CHECK Mode Code Retrieval (Lexus Scan Tool Only)

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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 DETECTION LOGIC under INTRODUCTION.
  6. 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
    P0010  Camshaft Position "A" Actuator Circuit (Bank 1)
    P0011  Camshaft Position "A" Timing Over Advanced Or System Performance (Bank 1)
    P0012  Camshaft Position "A", Timing Over, Retarded (Bank 1)
    P0016  Crankshaft Position, Camshaft Position Correction (Bank 1, Sensor A)
    P0018  Crankshaft Position, Camshaft Position Correction (Bank 2, Sensor A)
    P0020  Camshaft Position "A" Actuator Circuit (Bank 2)
    P0021  Camshaft Position "A", Timing Over, Advanced Or System Performance (Bank 2)
    P0022  Camshaft Position "A", Timing Over, Retarded (Bank 2)
    P0036  Oxygen Sensor Heater Control Circuit (Bank 1, Sensor 2)
    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) Sensor Circuit
    P0116  Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Fault
    P0120  Throttle (TP)/Pedal Position Sensor Switch "A" Circuit Malfunction
    P0121  Throttle (TP)/Pedal Position Sensor Switch "A" Circuit Range/Performance Fault
    P0125  Insufficient Coolant Temperature For Closed Loop Fuel Control
    P0128  Thermostat Malfunction
    P0134  Oxygen (A/F) Sensor Circuit No Activity Detected (Bank 1, Sensor 1)
    P0135  Oxygen (A/F) Sensor Heater Circuit (Bank 1, Sensor 1)
    P0136  Heated Oxygen Sensor Circuit Fault (Bank 1 Sensor 2)
    P0154  Oxygen (A/F) Sensor Circuit No Activity Detected (Bank 2, Sensor 1)
    P0155  Oxygen (A/F) Sensor Heater Circuit (Bank 2, Sensor 1)
    P0171  System Too Lean (Fuel Trim - Bank 1)
    P0172  System Too Rich (Fuel Trim - Bank 1)
    P0174  System Too Lean (Fuel Trim - Bank 2)
    P0175  System Too Rich (Fuel Trim - Bank 2)
    P0300  Random Cylinder Misfire Detected
    P0301-P0306  Cylinders No. 1-6 Misfire Detected
    P0325  Knock Sensor 1 Circuit
    P0330  Knock Sensor 2 Circuit
    P0335  Crankshaft Position (CKP) Sensor "A" Circuit
    P0339  Crankshaft Position Sensor "A" Circuit Intermittent
    P0340  Camshaft Position Sensor "A" Circuit (Bank 1 Or Single Sensor)
    P0341  Camshaft Position Sensor "A" Circuit Range/Performance (Bank 1 Or Single Sensor)
    P0345  Camshaft Position Sensor "A" Circuit (Bank 2)
    P0346  Camshaft Position Sensor "A" Circuit Range/Performance (Bank 2)
    P0351  Ignition Coil "A" Primary/Secondary Circuit
    P0352  Ignition Coil "B" Primary/Secondary Circuit
    P0353  Ignition Coil "C" Primary/Secondary Circuit
    P0354  Ignition Coil "D" Primary/Secondary Circuit
    P0355  Ignition Coil "E" Primary/Secondary Circuit
    P0356  Ignition Coil "F" Primary/Secondary Circuit
    P0420  Catalyst System Efficiency Below Threshold
    P0441  Incorrect EVAP Purge Flow
    P0442  EVAP System Small Leak Detected
    P0446  EVAP Vent Control Fault
    P0451  EVAP Pressure Sensor Range/Performance Fault
    P0456  Evaporative Emission Control System Leak Detected (Very Small Leak)
    P0500  Vehicle Speed Sensor (VSS) Malfunction
    P0505  Idle Control System Malfunction
    P0511  Idle Air Control Circuit
    P0560  System Voltage
    P07XX (2) Transmission Fault
    P2195  Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1, Sensor 1)
    P2196  Oxygen (A/F) Sensor Signal Stuck Rich (Bank 1, Sensor 1)
    P2197  Oxygen (A/F) Sensor Signal Stuck Lean (Bank 2, Sensor 1)
    P2198  Oxygen (A/F) Sensor Signal Stuck Rich (Bank 2, Sensor 1)
    P2237  Oxygen Sensor Pumping Current Circuit/Open (For A/F Sensor) (Bank 1, Sensor 1)
    P2240  Oxygen Sensor Pumping Current Circuit/Open (For A/F Sensor) (Bank 2, Sensor 1)
    P2A00  A/F Sensor Circuit Slow Response (Bank 1, Sensor 1)
    P2A03  A/F Sensor Circuit Slow Response (Bank 2, Sensor 1)
    B2796(3) No Communication In Immobilizer System
    B2797(3) Communication Malfunction No. 1
    B2798(3) Communication Malfunction No. 2
    (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 ENGINE IMMOBILIZER SYSTEMS - RX300 article in ACCESSORIES & EQUIPMENT.
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