Lexus E300 Fault Code List

• The Check Engine light stays on when emissions exceed federal standards. Jupiterimages/Creatas/Getty Images

  Your Lexus on-board diagnostic (OBD 11) fault codes are a powerful diagnostic tool, but the codes are only one piece of information when your ES300 malfunctions. Lexus ES300 style and power requires service technicians, certified by the Lexus Commitment to Perfection program, at the Lexus dealership. The Lexus service technician will attach a scanner to your ES300 wiring system to read the fault codes and help diagnose the mechanical or electrical problem.

P0100 to P0399 Engine Fault Codes

• Owners of Lexus ES300s released in 1999 or 2000 report difficulty with oxygen sensors. From the Lexus forums, an 1999 ES300 owner reports P0150 and P0153 trouble codes, a problem with the bank 2, sensor 1 Oxygen sensor. Bank 2 is toward the front of the vehicle, and the oxygen sensor is near the exhaust manifold. Another 2000 Lexus ES300 owner reports the bank 1 sensor 1 Air/Fuel sensor is lit. This sensor is in the rear exhaust manifold. A list of ES300 OBD Engine Fault Codes follows:

  P0100-P0104 Mass or Volume Air Flow

  P0105-P0109 Exhaust Manifold

  P0110-P0114 Intake Air Pressure

  P0115-P0119 Engine Coolant Temperature

  P0120-P0124 Throttle Position Sensor

  P0125-P0126 Insufficient Coolant Temperature

  P0128 Thermostat

  P0130-P0167 Oxygen Sensors

  P0168-P0194 Fuel Temperature Too High

  P0195-P0199 Engine Oil

  P0200-P0212 Fuel Injectors

  P0213-P0214 Cold Start

  P0218 Transmission Fluid Temperature

  P0215 Engine Shut Off Solenoid

  P0220-P0229 Gas Pedal

  P0230-P0233 Fuel Pump

  P0234-P0250 Turbo Chargers

  P0251-P0260 Injection Pump

  P0261-P0296 Engine Cylinders

  P0298 Engine Oil Temperature Is Too High

  P0300-P0314 Cylinder Misfire

  P0320-P0323 Ignition

  P0324-P0334 Knock Sensor

  P0335-P0339 Crankshaft

  P0385-P0389 Crankshaft

  P0340-P0349 Camshaft

  P0365-P0369 Camshaft

  P0390-P0394 Camshaft

  P0350-P0362 Ignition Coil

  P0372-P0379 Timing

  P0380-P0382 Heater Glow Plug

P0400 to P0699 Check Engine Fault Light

• The Check Engine Light may stay on, come and go or blink in response to the emissions system. If the problem does not recur, the light will go out. The OBD fault codes appear when the ES300's emissions rise above the emissions limit set by the federal government. Changing the type of fuel may solve the problem. A list of OBD 11 codes follows:

  P0400-P0409 Exhaust Gas

  P0410-P0419 Secondary Air

  P0420-P0439 Catalyst System

  P0440-P0457 Evaporative Emission

  P0460-P0464 Fuel Level

  P0465 Evaporative Purge

  P0470-P0479 Exhaust Pressure

  P0480-P0485 Cooling Fan

  P0486-P0488 Exhaust Gas

  P0491-P0492 Secondary Air Injection

  P0500-P0509 Vehicle Speed

  P0510 Closed Throttle

  P0512 Starter

  P0513-P0517 Battery Temperature

  P0520-P0524 Engine Oil Sensor

  P0530-P0534 Air Conditioner

  P0540-P0542 Intake Air

  P0544-P0549 Exhaust Gas

  P0550-P0554 Power Steering

  P0560-P0563 System Voltage

  P0564-P0577 Cruise Control

  P0600 Communications

  P0601-P0610 Computer

  P0615-P0617 Starter Relay

  P0620-P0623 Generator

  P0624 Fuel Cap

  P0635-P0637 Power Steering

  P0638-P0639 Throttle Actuator

  P0640-P0647 Air Conditioner

  P0649 Speed Control

  P0654 Engine RPMs

  P0660-P0665 Intake Valve Timing

Codes P0700 to P0999 Transmission System Faults

• An ES300 fault code from the transmission is an indication that the transmission malfunctioned. But the problem might originate elsewhere. If coolant is not the proper temperature, the transmission will be stuck in a lower gear. A list of transmission fault codes follows:

  P0700-P0714 Transmission

  P0720-P0723 Output Sensor

  P0719,P0724 Torque Converter

  P0725-P0728 Engine Speed

  P0730-P0736 Generator

  P0737-P0739 Engine Speed

  P0749 Torque Converter Clutch

  P0745-P0749 Pressure Control

  P0750-P0779 Solenoid Switch

  P0794-P0799 Specific Part of Transmission

  P0800-P0835 Clutch & Transmission

  P0836-P0839 Four Wheel Drive

  P0840-P0849 ATF pressure

  P0850-P0855 Park, Neutral, Drive

  P0856-P0859 Traction

  P0859-P0866 Transmission Control Unit

  P0867-P0879 ATF Pressure

  P0880-P0892 Transmission Relay

  P0893-P0899 Transmission

  P0900-P0999 Transmission and Clutch Actuator