Nissan & Infiniti 3.7 litre V6, All Engine Sensors Explained: OBD4Everyone Ep.18

In the title I used the term “engine sensor” however, I am actually going to explain ALL the parameter IDs or PIDs for the 3.7 litre V6 used in Nissan and Infiniti vehicles.

These PIDs are provided by the engine’s onboard diagnostic system and we will be looking at a service called Mode $01, which shows us live data.

The $ in mode $01 tells us it is a hexadecimal number.

Google hexadecimal if you want to know more, but you don’t need to for the purpose of this video.

We are going to be using a portion of OBD Fusion’s Diagnostic report to explain ALL mode $01 PIDs for Nissan’s 3.7 litre v6 engine known as the VQ37VHR.

All Engine Sensors / Mode $01 PIDs for the VQ37VHR:

• Fuel system status for bank 1 and bank 2
• Calculated load
• Engine coolant temperature (ECT)
• Short/Long Fuel trims for bank 1 and bank 2
• Intake Manifold absolute pressure (MAP)
• Intake air temp (IAT)
• Engine RPM
• Vehicle speed
• Ignition timing advance for #1 cylinder
• Absolute throttle position
• Location of oxygen sensors
• O2 voltage (Bank 1+2, Sensor 2)
• Short term fuel trim (Bank 1+2, Sensor 2)
• OBD requirements to which vehicle or engine is certified • Time since engine start
• Distance traveled while MIL is activated
• O2 Sensor lambda for bank 1 and bank 2
• O2 Sensor voltage for bank 1 and bank 2
• Commanded evaporative purge 
• Fuel level input (as a percentage)
• Number of warm-ups since DTCs cleared 
• Distance traveled since DTCs cleared
• Evap system vapour pressure
• Barometric pressure
• Catalyst temperature (Bank 1+2 Sensor 1)
• Control module voltage
• Absolute load value
• Fuel/Air commanded equivalence ratio
• Relative throttle position
• Accelerator pedal position  D+E
• Commanded throttle actuator control
• Engine run time run while MIL is activated
• Engine run time since DTCs cleared
• Fuel type
• Mass airflow for bank 1 and bank 2 (MAF A/B)
• Input voltage read by the scan tool

Please keep in mind, the typical values provided may be different than yours for many reasons like elevation, air temperature, and gasoline quality just to name a few.

Please let me know in the comments below what you think of this video and if you would like to see something like this for a different engine.

Thanks for watching!