DTC code
P0090
Fuel Pressure Regulator A Control Circuit/Open
Technical guide
Symptoms
- Hard start
- rough idle
- loss of power
Probable causes
- Fuel pressure regulator control circuit open
- wiring fault to FPR solenoid
- failed solenoid
Diagnostic steps
- Check FPR connector and wiring.
- Measure solenoid resistance.
- Replace FPR solenoid.
Cross-checked technical synthesis (QA). It does not replace the manufacturer's procedure.
AI here is a librarian: this page shows only what mechanics confirmed, or says “unknown”. It never suggests a diagnosis — MECCANIC interprets the code, never your car.
0 confirmed cases on P0090
Nothing confirmed yet for this code. No guess is offered on purpose.
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