Fuel Injector Pressure sensor location
Senior Member
Joined: 12-05-2014
Posts: 3,368
From: Northern Ohio
With full knowledge that the original post is a bit old, for the benefit of future readers, OP was barking up the wrong tree. P0090 is a problem with the regulator, not the sensor.
Never dealt with this but isn’t the regulator integral with the high pressure fuel pump? The first action would be to check the wires and plug to the HPFP of course but the problem may be the HPFP.
Never dealt with this but isn’t the regulator integral with the high pressure fuel pump? The first action would be to check the wires and plug to the HPFP of course but the problem may be the HPFP.
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Joined: 05-01-2014
Posts: 8,512
From: California
He had just replaced the HPFP, so perhaps a pin got bent or pushed out of the connector.
But the sensor is a possible cause, from obd-codes.com
Potential causes for this code to set are:
Shorted or open wiring and/or connectors in the fuel pressure. regulator control circuit
Defective fuel pressure regulator
Faulty fuel rail pressure sensor
Bad PCM or a PCM programming error
Read more at: https://www.obd-codes.com/p0090
Copyright OBD-Codes.com
But the sensor is a possible cause, from obd-codes.com
Potential causes for this code to set are:
Shorted or open wiring and/or connectors in the fuel pressure. regulator control circuit
Defective fuel pressure regulator
Faulty fuel rail pressure sensor
Bad PCM or a PCM programming error
Read more at: https://www.obd-codes.com/p0090
Copyright OBD-Codes.com
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