P0193 - Fuel Rail Pressure Sensor A Circuit High
WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 2014 Lincoln Navigator, 2014 Lincoln MKZ, 2014 Lincoln MKX, 2014 Lincoln MKT, and 2014 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.
P0193 - FUEL RAIL PRESSURE SENSOR A CIRCUIT HIGH
| Description: The comprehensive component monitor (CCM) monitors the fuel rail pressure (FRP) sensor circuit to the PCM for high voltage. The test fails if the FRP voltage exceeds a calibrated limit and amount of time during testing. | |||
Possible Causes:
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| Diagnostic Aids: An FRP signal high condition can be caused by any number of conditions, including a short on FRP signal to VREF, an open FRP signal or signal return. The FRP signal line is pulled up by the PCM and VREF at the sensor, and down by the sensor through SIGRTN. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST DD: FUEL PRESSURE, FUEL RAIL PRESSURE (FRP) AND FUEL RAIL PRESSURE TEMPERATURE (FRPT) SENSORS . | ||