P0193 - FUEL RAIL PRESSURE SENSOR "A" CIRCUIT HIGH
Description of DTC code P0193
The DTC code P0193 OBD2 refers to the Fuel Rail Pressure Sensor (FRP). Specifically, it indicates that the signal from this sensor has exceeded the limit for a long time. The cause of this failure can be electrical or mechanical, depending on the type of fuel and the fuel system that the manufacturer has.
This fault code is established because the PCM (Powertrain Control Module) has detected that the fuel pressure is not within the parameters established by the manufacturer.
Symptoms of fault code P0193
- Check Engine light illuminates on the board.
- The engine loses power.
- When starting the engine, it may not start.
Causes of OBD2 P0193
The factors that can lead to the establishment of the diagnostic code P0139 OBD II can be:
- The fuel level may be very low.
- The fuel filter may be clogged.
- The fuel pump relay may be defective.
- The fuel pump may be faulty or defective.
- FRP (Fuel Rail Pressure) sensor cables may be shorted or rubbing against some component.
- The FRP sensor connectors may be corroded.
- The Fuel Rail Pressure Sensor (FRP) may be defective.
Possible solutions of the DTC code P0193
To make a correct diagnosis and carry out the relevant repairs before the code P0193, you must do the following:
- The first thing you can do is look for the Technical Service Bulletins (TBS), since the solution to this code can be known by the manufacturer.
- Check the fuel level.
- Check the fuel pump as well as the fuel filter.
- Inspect the electrical system and FRP (Fuel Rail Pressure) sensor connectors for broken, worn or rubbing cables with any component. Also verify the terminals, as they may have corrosion. Repair or change any of these items as necessary. Delete the code and see if it reappears.
- Change the fuel filter.
- You can replace the fuel pump fuse.
- Change the Fuel Rail Pressure Sensor (FRP).