Lexus Check Engine Light Codes

Welcome to the Lexus Check Engine Light codes page. Below you will find the most complete list of Lexus trouble codes available. The code definitions are a good starting point when determining the cause of the service engine light but where do you go from there? We have a large number of resources to help you repair the problem. Here is how we suggest you proceed. Look up your code definition. This tells you where to start testing. If you are unsure of any abbreviations, check out the acronym list by clicking on the link at the left.

Next, read our article Automotive Circuit Testing 101, and if there is an article related to the system you are testing, such as Oxygen Sensors or EGR concerns, read these as well. They will provide valuable info! If there is a link to a specific diagnosis strategy for the code then follow that and start testing. If there is no procedure for your manufacturer specific code, then I suggest referring to a similar generic OBD II code (these are listed numerically by system type) to get a good idea of what to look for.

If at this point you still need assistance use the "Get Help" link and let us know how we can help. We can provide information on component location, specifications, circuit color/location and more. We do ask that you please read the info available on the site first so that we can help reduce repeat questions. So please read our Disclaimer and when you're ready jump in!

Also we value your feedback and like to hear stories of unusual fixes or concerns you may have run into with your Check Engine Light, so feel free to share your experiences by using the "Contact Us" link. Let's go!

We do our best to update these Lexus check engine light codes as frequently as possible. If you find one missing let us know and we we'll add it immediately! Please use the form on our Contact Page to get in touch with us. We certainly understand how frustrating it can be to look for a code definition and have it not online when you need it. And lets face it, if the service engine light is on then you need it now! It's easiest to use the "Find On This Page" feature of your browser's "Edit" menu to find codes on this page as the list is quite long. These are listed in numerical order for easy searching.

When retrieving Lexus check engine light codes with an OBD II scan tool, proceed as follows:
1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the glove compartment. The connector has a removable cover.
2. Turn the ignition on.
3. Follow scan tool manufacturer's operating instructions to access the Diagnostic Trouble Codes (DTC's).

Remember, these are manufacturer specific codes only. Refer to our Generic OBD II code list for definitions on all other Lexus diagnostic trouble codes.

Manufacturer Specific Codes

P1100 BARO Sensor Circuit Malfunction

P1120 Accelerator Pedal Position Sensor Circuit Malfunction

P1121 Accelerator Pedal Position Sensor Range/Performance Problem

P1125 Throttle Control Motor Circuit Malfunction

P1126 Magnetic Clutch Circuit Malfunction

P1127 ECTS Actuator Power Source Circuit Malfunction

P1128 Throttle Control Motor Lock Malfunction

P1129 Electronic Throttle Control System

P1130 Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction
(Bank 1 Sensor 1) - Read Our Article On Oxygen Sensor Codes For Help With This Lexus Trouble Code

P1133 Air/Fuel Ratio Sensor Circuit Response Malfunction
(Bank 1 Sensor 1) - Read Our Article On Oxygen Sensor Codes For Help With This Lexus Trouble Code

P1135 Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P1150 Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction
(Bank 2 Sensor 1) - Read Our Article On Oxygen Sensor Codes For Help With This Lexus Trouble Code

P1153 Air/Fuel Ratio Sensor Circuit Response Malfunction
(Bank 2 Sensor 1)

P1155 Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P1200 Fuel Pump Relay/ECU Circuit Malfunction

P1300 Igniter Circuit Malfunction (Bank 1 Or No. 1) - Related Information

P1305 Igniter Circuit Malfunction (Bank 2 Or No. 2)

P1310 Igniter Circuit Malfunction (No. 3)

P1315 Igniter Circuit Malfunction (No. 4)

P1320 Igniter Circuit Malfunction (No. 5)

P1325 Igniter Circuit Malfunction (No. 6)

P1330 Igniter Circuit Malfunction (No. 7)

P1335 CKP Sensor Circuit Malfunction During Engine Running

P1340 Igniter Circuit Malfunction (No. 8)

P1345 VVT Sensor Circuit Malfunction (Bank 1)

P1346 VVT Sensor Range/Performance Problem (Bank 1)

P1349 VVT System Malfunction (Bank 1)

P1350 VVT Sensor Circuit Malfunction (Bank 2) - Read Our Article on Automotive Circuit Testing For Help With This Lexus Check Engine Light Code

P1351 VVT Sensor Range/Performance Problem (Bank 2)

P1354 VVT System Malfunction (Bank 2)

P1400 Sub-TP Sensor Malfunction

P1401 Sub-TP Sensor Range/Performance

P1410 EGR Valve Position Sensor Circuit Malfunction - Read Our Article on Automotive Circuit Testing For Help With This Lexus Check Engine Light Code

P1411 EGR Valve Position Sensor Circuit Range/Performance Malfunction - Read Our Article on EGR Valve Codes For Help With This Lexus Check Engine Light Code

P1500 Starter Signal Circuit Malfunction

P1510 Intake Air Volume Too low With Supercharger On

P1520 Stop Lamp Switch Malfunction

P1565 Cruise Control Main Switch Circuit Malfunction - Read Our Article on Automotive Circuit Testing For Help With This Lexus Check Engine Light Code

P1566 Cruise Control Main Switch Circuit Malfunction - Read Our Article on Automotive Circuit Testing For Help With This Lexus Check Engine Light Code

P1600 ECM BATT Malfunction

P1605 Knock Control CPU Malfunction

P1633 ECM Malfunction (ETCS Circuit)

P1645 Body ECU Malfunction

P1656 OCV Circuit Malfunction (Bank 1) - Read Our Article on Automotive Circuit Testing For Help With This Lexus Check Engine Light Code

P1663 OCV Circuit Malfunction (Bank 2) - Read Our Article on Automotive Circuit Testing For Help With This Lexus Check Engine Light Code

P1700 Vehicle Speed Sensor '2' Circuit Fault - Read Our Article on Automotive Circuit Testing For Help With This Lexus Check Engine Light Code

P1705 Direct Clutch Speed Circuit Fault - Read Our Article on Automotive Circuit Testing For Help With This Lexus Check Engine Light Code

P1765 linear Shift Solenoid Circuit Fault - Read Our Article on Automotive Circuit Testing For Help With This Lexus Check Engine Light Code

P1780 PNP Switch Malfunction - Related Information

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