P0193 – Fuel Rail Pressure Sensor Circuit High Input

Meaning:

When the PCM has detected that the pressure of fuel is not within the proper range, the P0193 happens
The P0193 is triggered when the PCM has detected that the pressure of fuel is not within the proper range

The PCM has detected that the pressure of fuel is not within the range that’s predetermined by the car manufacturer.

Main Symptoms:

  • Check Engine Light comes on
  • Engine cranks but doesn’t start
  • Car hesitates upon acceleration

Possible Causes:

  • Defective fuel rail pressure (FRP) sensor
  • Defective fuel pump
  • Open or short in FRP circuit
  • Low or no fuel in tank

Diagnostic Steps:

  • Inspect all wiring and connections in FRP circuit and check for shorts, opens, broken and melted wires
  • Check for corroded or burnt terminals in connectors
  • Use a scan tool to pull codes and freeze frame data

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