DTC code
P0193
Fuel Rail Pressure Sensor Circuit High Bank 1
Technical guide
Symptoms
- Check engine light illumination
- Reduced fuel economy
- Lack of engine power
- Engine hesitation or stalling at stops
- Unusual tailpipe emissions odor
- Fuel trim codes (like P0172) may trigger
- Failed emissions tests
Probable causes
- Defective fuel rail pressure sensor
- Signal shorted to voltage
- Return circuit open
- Abnormal fuel pressure
- PCM failure
Diagnostic steps
- If any of the fuel supply lines or the fuel rail pressure sensor are removed on a common rail system, the component must be replaced.
- Review vehicle-specific repair manuals (Chilton, ALLDATA) for diagnosis and repair steps.
- Seek professional help to avoid misdiagnosis.
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 P0193
Nothing confirmed yet for this code. No guess is offered on purpose.
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