As Mechtrix stated this issue likely isn't the sensor itself. P0193 code means there is an issue with the sensor circuit. No code actually tells you "replace part X" instead it means the ECM is seeing incorrect information from one of the monitored systems. Then you use a scan tool or testing to discover where the issue is. There are times when it may be an unmonitored system causing a problem in a monitored system or something like a failed wire or connector.
Your sensor should have a 4 wire connector. If you have a scan tool that can read live data and not just codes it would be easier to just look at the reported fuel pressure and temperature, if you have a reported fuel pressure of zero but the engine is running it could be the signal wire to the ECM is corroded or broken. If you had no reported pressure or temperature then you would look at the ground or power as the sensor shares both. Without that you can use a multimeter to do some testing but it will be limited in scope. These are the wire terminals and the colors of the wires. Using a meter to measure between pin 2 and pin 4 should show 5 volts with the key on and the connector unplugged If it does then turn off the key. Now switch to resistance and measure on the sensor between pins pin 1 and pin 2. You should see a value, now start the engine and measure it again, the value should have changed. Now test between pins 3 and pin 4 and there should be a value. Those will tell you that there is power and ground and that the new sensor is working. If they are all correct then you need to test the same things at the ECM end to see if it's a wiring issue or possibly internal to the ECM. That is where a scan tool makes it much easier.
Pin 1 Red w pink - Fuel pressure signal - Voltage varies with pressure
Pin 2 Brown w white - Reference voltage - Fixed reference voltage from the ECM
Pin 3 Light Blue - Fuel temperature signal - Varies with fuel temperature
Pin 4 Gray w red - Signal return (ground) - should be zero volts in reference to ground.
https://2carpros.com/articles/how-to-use-a-voltmeter/
https://2carpros.com/articles/can-scan-controller-area-network-easy/
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Oct 6, 2026 at 1:12 PM