Fuel Rail Pressure Sensor Circuit High Bank 1

Where it lives

For P0193, the sensor sits on the circuit this code reports. The description of P0193 puts it on bank 1.

Check these first

• A short to voltage on the fuel rail pressure signal wire
• A failed fuel rail pressure sensor on bank 1
• High rail pressure from a stuck regulator
• A restricted fuel return line
• A faulty ECM input

What to do next

1. Check rail pressure against the commanded value
2. Test the signal wire for a short to voltage
3. Check the fuel pressure regulator
4. Inspect the fuel return line for a restriction
5. Replace the fuel rail pressure sensor if it reads high
6. Clear the code and retest

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