FI and Map Sensor Fault

Neo187H · 10-24-2012, 06:34 PM

The sensor will still function, it will just no longer set that specific fault. Say the range considered normal is 1-3PSI(made up numbers). If that's the range the ECU is supposed to see to consider everything working properly and the numbers are outside of that prescribed range the computer will set said fault. If that fault is turned off the sensor still reads, it just no longer throws a fault if it's outside of that prescribed range.

kenny's 370z · 10-24-2012, 06:36 PM

Quote:

Originally Posted by Neo187H

The sensor will still function, it will just no longer set that specific fault. Say the range considered normal is 1-3PSI(made up numbers). If that's the range the ECU is supposed to see to consider everything working properly and the numbers are outside of that prescribed range the computer will set said fault. If that fault is turned off the sensor still reads, it just no longer throws a fault if it's outside of that prescribed range.

thank you ! repp'd

W.O.W. 370Z · 10-25-2012, 02:52 PM

What about replacing with a map sensor that actually reads boost instead of disabling CEL?

Stock GTR Map Sensor reads up to 24 PSI.

2009 2012 Nissan R35 GT R Stock Map Sensor GTR Manifold Absolute Pressure PSI | eBay

Neo187H · 10-25-2012, 03:47 PM

Quote:

Originally Posted by W.O.W. 370Z

What about replacing with a map sensor that actually reads boost instead of disabling CEL?

Stock GTR Map Sensor reads up to 24 PSI.

2009 2012 Nissan R35 GT R Stock Map Sensor GTR Manifold Absolute Pressure PSI | eBay

The issue isn't that the sensor can't read it, if you go into actual values the MAP sensor can read the boost just fine. I know this for a fact because I have personally done it on my car since I don't run a boost gauge on my SC setup.

The issue is that the car is NA from the factory, the computer is programmed to think any positive pressure is the sensor reading something incorrectly, hence the fault.

juld0zer · 08-27-2014, 07:16 PM

all 370z has a MAP sensor and another pressure sensor near your master cyl for the brake booster to ensure it has constant sufficient vacuum.

there has to be a DTC for each sensor. try disconnecting the sensor in the upper right quarter of the intake collector and then scan the car

10-25-2012, 02:52 PM	#3 (permalink)
W.O.W. 370Z A True Z Fanatic Join Date: Mar 2010 Location: Miami Posts: 1,757 Drives: 2010 Touring Sport Z Rep Power: 20	What about replacing with a map sensor that actually reads boost instead of disabling CEL? Stock GTR Map Sensor reads up to 24 PSI. 2009 2012 Nissan R35 GT R Stock Map Sensor GTR Manifold Absolute Pressure PSI \| eBay O&G likes this.

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10-24-2012, 06:34 PM	#1 (permalink)
Neo187H Enthusiast Member Join Date: Jan 2009 Location: Albany, NY Posts: 302 Drives: PW 370Z Rep Power: 17	The sensor will still function, it will just no longer set that specific fault. Say the range considered normal is 1-3PSI(made up numbers). If that's the range the ECU is supposed to see to consider everything working properly and the numbers are outside of that prescribed range the computer will set said fault. If that fault is turned off the sensor still reads, it just no longer throws a fault if it's outside of that prescribed range.

08-27-2014, 07:16 PM	#5 (permalink)
juld0zer Enthusiast Member Join Date: Nov 2012 Location: Sydney Posts: 428 Drives: 11 Nissan 370Z MB M6 Rep Power: 139	all 370z has a MAP sensor and another pressure sensor near your master cyl for the brake booster to ensure it has constant sufficient vacuum. there has to be a DTC for each sensor. try disconnecting the sensor in the upper right quarter of the intake collector and then scan the car