When your Infiniti’s check engine light comes on, it’s usually accompanied by a cryptic code that can leave you scratching your head. But what do these error codes really mean, and how can you use them to diagnose the issue? You’re about to find out. Infiniti OBD/OBD2 codes are the key to accessing the secrets of your vehicle’s onboard diagnostics system, and understanding how to interpret them is vital for getting your car back on the road quickly.
As you delve into the world of Infiniti codes, you’ll discover a whole new level of control over your vehicle’s maintenance and repair.
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Understanding Infiniti OBD2 Codes
In terms of understanding Infiniti OBD2 codes, you need to grasp the basics of the onboard diagnostics system.
This system monitors your vehicle’s performance, detecting issues with components like the accelerator pedal’s Position Sensor.
When a problem arises, the system generates an OBDII code, which can be accessed through the OBD2 port using a scan tool like the ANCEL V6 Pro.
These codes are typically four-digit numbers, with the first letter indicating the affected system (e.g., “P” for powertrain).
Understanding how to interpret these codes is vital for diagnosing and resolving issues efficiently.
With this knowledge, you’ll be better equipped to identify and fix problems, saving you time and money in the long run.
Reading and Clearing Engine Codes
You’ve grasped the basics of Infiniti OBD2 codes, now it’s time to move on to reading and clearing engine codes.
To read codes, set your Infiniti’s Engine Control Module (ECM) in Diagnostic Test Mode II. The Service Engine Soon warning light will flash, indicating the trouble code.
Count the flashes to determine the code, with zero represented by ten flashes and the 1,000th-digit numeral flashing on and off in a 1.2-second cycle.
To clear engine codes, set the ECM in Diagnostic Test Mode II, fully depress the accelerator pedal for over 10 seconds, and then release it.
This erases emission-related diagnostic information. Fully release the pedal to confirm DTC 0000 is displayed, indicating successful erasure of diagnostic trouble codes.
Infiniti OBD1 & OBDII Codes Chart
By now, you’re familiar with reading and clearing engine codes, so let’s plunge into the Infiniti OBD1 & OBDII Codes Chart.
This chart is a comprehensive guide to diagnosing issues in your Infiniti vehicle. You’ll find codes without descriptions, along with their corresponding meanings and possible causes.
The first step in using this chart is to identify the type of code your vehicle is throwing – OBD1 or OBDII. Once you’ve determined the code type, you can refer to the chart to diagnose the issue.
For example, if your vehicle’s check engine light is on, the code might indicate a problem with the control solenoid. Vehicles OBD systems are designed to help you identify and fix issues quickly, and this chart is an essential tool in that process.
Most Common Infiniti OBD-II Trouble Codes
| Code | Description |
|---|---|
| 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 |
| P1220 | Fuel Pump Control Module (FPCM) |
| P1320 | Ignition Signal, Primary |
| P1335 | Crankshaft Position Sensor (CKPS) (Ref) |
| P1336 | Crankshaft Position Sensor (CKPS) (Cog) |
| P1400 | EGRC Solenoid Valve |
| P1401 | EGR Temperature Sensor |
| P1402 | EGR Function (Open) |
| 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) |
| P1491 | Vacuum Cut Valve Bypass Valve |
| P1492 | EVAP Canister Purge Control/Solenoid Valve (Circuit) |
| 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 |
