DTC code
P0088
Fuel Rail/System Pressure Too High
Technical guide
Symptoms
- Check engine light
- possible derate
- rough running
Probable causes
- Fuel rail pressure too high
- fuel pressure regulator stuck closed
- faulty rail pressure sensor
- HPFP over-supplying
Diagnostic steps
- Check fuel pressure sensor reading vs actual.
- Test fuel pressure regulator.
- Check for faulty FPR solenoid.
- Replace rail pressure sensor if reading erratic.
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 P0088
Nothing confirmed yet for this code. No guess is offered on purpose.
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