Infiniti Check Engine Light Codes

Welcome to the Infiniti Check Engine Light codes page. Below you will find the most complete list of Infiniti 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 Infiniti 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 Infiniti 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 steering column. The connector may have 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 Infiniti diagnostic trouble codes.

Manufacturer Specific Codes

P1105 MAP/BARO Switch Solenoid Valve

P1110 Intake Valve Timing Control (Left Bank)

P1120 Secondary Throttle Position Sensor (STPS)

P1125 TPS Intermittent

P1130 Swirl Control Valve Control Solenoid Valve

P1135 Intake Valve Timing Control (Right Bank)

P1140 Intake Valve Timing Control Position Sensor (Left Bank)

P1145 Intake Valve Timing Control Position Sensor (Right Bank)

P1148 Closed Loop Control (Bank 1)

P1165 Swirl Control Valve Control Vacuum Check Switch

P1168 Closed Loop Control (Bank 2)

P1210 Traction Control System (TCS) Signal Circuit - Read Our Article On Automotive Circuit Testing For Help With This Infiniti Check Engine Light Code

P1220 Fuel Pump Control Module (FPCM)

P1320 Ignition Signal, Primary - Related Information

P1335 Crankshaft Position Sensor (CKPS) (Ref)

P1336 Crankshaft Position Sensor (CKPS) (Cog)

P1400 EGRC Solenoid Valve - Read Our Article On EGR Valve Codes For Help With This Infiniti Check Engine Light Code

P1401 EGR Temperature Sensor - Read Our Article On EGR Valve Codes For Help With This Infiniti Check Engine Light Code

P1402 EGR Function (Open) - Read Our Article On EGR Valve Codes For Help With This Infiniti Check Engine Light Code

P1440 EVAP Control System (Small Leak) (Positive Pressure)

P1441 VC/V Bypass Valve

P1443 Canister Control Vacuum Check Switch

P1444 Canister Purge Volume Control Solenoid Valve

P1445 Purge Volume Control/V

P1446 EVAP Canister Vent Control Valve (Close)

P1447 EVAP Control System Purge Flow Monitoring

P1448 EVAP Canister Vent Control Valve (Open)

P1490 Vacuum Cut Valve Bypass Valve (Circuit) - Read Our Article On Automotive Circuit Testing For Help With This infiniti Check Engine Light Code

P1491 Vacuum Cut Valve Bypass Valve

P1492 EVAP Canister Purge Control/Solenoid Valve (Circuit) - Read Our Article On Automotive Circuit Testing For Help With This Infiniti Check Engine Light Code

P1493 EVAP Canister Purge Control Valve/Solenoid Valve

P1605 A/T Diagnosis Communication Line

P1705 Throttle Position Sensor

P1706 PNP Switch

P1760 Overrun Clutch Solenoid Valve

P1900 Cooling Fan

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