Anyone had this problem? I found a lot of people have this problem but no real fix???
What is DFPE and VREF? TPS is throttle position sensor right?
P0190 indicates the reference voltage (Vref) from the PCM to the FRPS is not between 4 to 6 V as it should be. This could be a wiring problem (a broken wire between the PCM and FRPS), a bad FRPS, or a bad PCM. The FRPS, Throttle Position Sensor (TPS) and Differential Feedback Pressure EGR (DPFE) sensor share the same PCM Vref--if either of them were defective it could cause P0190.
I believe you mean you measured the voltage, not the current (amperage). No offense meant, it's just that after 45+ years of engineering I can't help it. Also one does not "ohm" a device any more that one would "volt" it or "ampere" it--it's just called measuring its resistance, the unit of measure is Ohms.Ok so I'm getting normal current to my FRPS, so im wanting to if the FRPS can be ohmed for resistance or will I not be able to tell its bad.