P0193 - Fuel Rail Pressure Sensor Circuit High Input
The Fuel Rail Pressure (FRP) sensor is a diaphragm strain gauge device
in which resistance changes with pressure. The electrical resistance of a
strain gauge increases as pressure increases, and the resistance
decreases as the pressure decreases. The varying resistance affects the
voltage drop across the sensor terminals and provides electrical signal
to the Powertrain Control Module (PCM) corresponding to pressure.
Strain gauge type sensors are consider passive sensors. A passive sensor
is connected to a voltage divider network so that varying the
resistance of the passive sensor causes a variation in total current
flow.
Voltage that is dropped across a fixed resistor in series with the
sensor resistor determines the voltage signal at the PCM. This voltage
signal is equal to the reference voltage minus the voltage drop across
the fixed resistor.
The FRP sensor measures the pressure of the fuel near the fuel
injectors. This signal is used by the PCM to adjust the fuel injector
pulse width and meter fuel to each combustion cylinder.
Symptoms:
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine will not start
Possible causes
- Excessive resistance in the circuit
- Low or no fuel
- Wiring harness connector of the fuel pressure sensor
- Fuel Rail Pressure Sensor
- Fuel Pump
Hope this helps (remember to rate this answer).
where is the pressure sensor and canister located?
FRP (Fuel Rail Pressure) is common problem on 4.0L, this device is located on the fuel rail, under the driverside of the intake manifold. Also this video could helped:http://www.youtube.com/watch?v=XNAhBHxX1...
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SOURCE: fuel rail pressure sensor chkt high input p0193
You need to have a code reader to find out what has turned on the check engine light. This could be caused by any number of things.
If you don't know someone with a code reader they can be purchased usually cheaper than what it cost to have a garage check it. I use auto tap software and my lap top. It gives me codes plus I can monitor the engine and many other sensors on my van in real time.
SOURCE: code P0193
The pressure in your fuel injection system is too high. You might need a new fuel pump or fuel regulator. Disconect the fuel line and check the pressure with a gauge {should be about 14 psi}. If it is its the regulator, if not the pump.
160....O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
P0161....O2 Sensor Heater Circuit (Bank 2 Sensor 2)
P0162....O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)
P0163....O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
P0164....O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)
P0165....O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)
P0166....O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)
P0167....O2 Sensor Heater Circuit (Bank 2 Sensor 3)
P0168....Fuel Temperature Too High
P0169....Incorrect Fuel Composition
P0170....Fuel Trim (Bank 1)
P0171....System too Lean (Bank 1)
P0172....System too Rich (Bank 1)
P0173....Fuel Trim Malfunction (Bank 2)
P0174....System too Lean (Bank 2)
P0175....System too Rich (Bank 2)
P0176....Fuel Composition Sensor Circuit
P0177....Fuel Composition Sensor Circuit Range/Performance
P0178....Fuel Composition Sensor Circuit Low Input
P0179....Fuel Composition Sensor Circuit High Input
P0180....Fuel Temperature Sensor A Circuit
P0181....Fuel Temperature Sensor A Circuit Range/Performance
P0182....Fuel Temperature Sensor A Circuit Low Input
P0183....Fuel Temperature Sensor A Circuit High Input
P0184....Fuel Temperature Sensor A Circuit Intermittent
P0185....Fuel Temperature Sensor B Circuit
P0186....Fuel Temperature Sensor B Circuit Range/Performance
P0187....Fuel Temperature Sensor B Circuit Low Input
P0188....Fuel Temperature Sensor B Circuit High Input
P0189....Fuel Temperature Sensor B Circuit Intermittent
P0190....Fuel Rail Pressure Sensor Circuit
P0191....Fuel Rail Pressure Sensor Circuit Range/Performance
P0192....Fuel Rail Pressure Sensor Circuit Low In put
P0193....Fuel Rail Pressure Sensor Circuit High Input
P0194....Fuel Rail Pressure Sensor Circuit Intermittent
P0195....Engine Oil Temperature Sensor
P0196....Engine Oil Temperature Sensor Range/Performance
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