TPIJeep

Hello I have been running my Gen 7 for a couple of months, the engine started running crappy and idling high so I plugged in the laptop and got a error code #32 High barometric pressure - If Barometer threshold trigger is greater than 4.94V (~107kPa) for more than 1 second. /// MIL set, Barometric pressure default to 102 kPa


Any idea what sensor controls this? and how to fix it, my Accel dealer is not answering the phone...

Thanks...

hectorsn

The MAP sensor acts as a Baro sensor during KOEO. This is for factory ecm's but I'm pretty sure it would be the same for the aftermarket. It should run pretty good with the default setting since if you are anywhere near sea level. Now, the question is, what is the MAP voltage or KPA reading? If it's reading voltage that high while the car is running, that is the poor driveability you are getting. You should only see volts that high during hard throttle applications.

TPIJeep

Its saying the voltage is greater than 4.94v: in the error code, I cannot find the actual voltage within the DFI software but the Map is reading with the KOEO is 1.03 PSIa and a reading of 107.07 Kpa Which appears to be a positive manifold pressure without the engine reading.

So do you think I have a faulty MAP sensor?

Thanks again! :hail:

hectorsn

OK, no biggie, it's reporting it in KPA and in standard pressure units. It's actually reading voltage but just reporting it that way to the scanner. But, what does it read with the engine running? It is possible that the MAP is bad but it is also possible that you have a faulty connection. Of all the sensors that go bad, I'd say that MAP's are the least frequent.

aDFIguy

The MAP sensor is NOT used to read barometric pressure while in KOEO.

The Gen 7 actually has an internal pressure sensor onboard, mounted within the module. That sensor continuously reads baro pressure so that it can be used to alter the fueling strategy on the fly, eliminating the need to shut the engine off when driving through altitude changes or varying weather conditions. It is either the internal sensor that has gone bad, or maybe the reference voltage to that sensor is out of range. Either way, you shoud probably send the box in to be looked at.

You may be able to see the sensor reading by selecting it as a datalogging variable, and looking at the datalogging screen, I don't have a system in front of me, and I don't remember if it is available to be looked at or not.

Call the DFI Technician, Noah, at (248) 380-1512. He will take care of you.

hectorsn

Doh! That's what you get for assuming. However, with the default setting of 102 kpa and him living in LA, the reading is about right unless he were in a hurricane. In other words, it shouldn't cause him a bad running engine.

aDFIguy

Yeah, I agree. I think the voltage reference has gone bad, and that it is probably affecting other things beside just the Patm sensor.