Common Symptoms
- Check Engine Light illuminated
- Hard starting or extended cranking
- Rough idle or engine stalling
- Poor acceleration or lack of power
- Engine runs in limp mode
- Poor fuel economy
Most Likely Root Causes
- Faulty fuel rail pressure sensor
- Damaged or corroded wiring harness to fuel rail pressure sensor
- Poor electrical connection at sensor connector
- Failed fuel pump or low fuel pressure
- Shorted sensor signal wire to ground
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Component Location
The fuel rail pressure sensor is mounted directly on the fuel rail, typically near the fuel injectors on the engine intake side.
Manufacturer Notes
Some manufacturers use a three-wire sensor design where signal voltage below specification immediately triggers this low input code.
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