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Ford 04 v6 po 0193 fuel rail pressure high input

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  • Contributor
  • 77 Answers

Sounds like your fuel pump is misbehaving. Check it for proper operation.

Posted on Jan 28, 2014

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Posted on Jan 02, 2017

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SOURCE: fuel rail pressure sensor chkt high input p0193

how to repair a Ford Freestar fuel rail pressure sensor

Posted on Aug 29, 2009

ZJLimited
  • 17970 Answers

SOURCE: p0193 fuel rail pressure circuit

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).

Posted on Jan 12, 2011

dttech
  • 4803 Answers

SOURCE: Fuel rail system pressure too

What is too high? The specification for that vehicle is 35-70 Psi (2.4-4.8 kg/cm2)
What is the data reading on the Fuel Rail Pressure Transducer sensor?
What, exactly, are you trying to fix? Do you have rich oxygen sensor codes?

Posted on May 13, 2011

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My code on the 2005 ford mustang said that my fuel rail pressure sensor A Circuit


Does the Vehicle start an run ? What engine does it have ? 4.0 or 4.6 L You vehicle has electronic returnless fuel system , Fuel rail pressure sensor , FPDM - fuel pump driver module . The fuel pump driver module controls the fuel by pulse width modulation
Pulsewidthmodulation (PWM) is a powerful technique for controlling analog circuits with a processor's digital outputs. PWM is employed in a wide variety of applications, ranging from measurement and communications to power control and conversion. The PCM - engine computer uses the fuel rail pressure sensor input to send commands to the FPDM .
What code ? P0--- what ?



P0190 - Fuel Rail Pressure (FRP) Sensor Circuit Malfunction Description: The comprehensive component monitor (CCM) monitors the FRP sensor to the powertrain control module (PCM) for VREF voltage. The test fails when the VREF voltage from the PCM drops to a voltage less than a minimum calibrated value. Possible Causes:
  • VREF open in harness.
  • VREF open in sensor.
  • Vacuum leaks.
Diagnostic Aids: Verify a VREF voltage between 4 and 6 volts. Application Key On Engine Off Key On Engine Running Continuous Memory Fuel rail pressure temperature (FRPT) sensor - GO to DD26 GO to DD26 Fuel rail pressure (FRP) sensor only - - GO to DD1 Fuel rail pressure (FRP) and fuel rail temperature (FRT) sensors - - GO to DD1


P0191 - Fuel Rail Pressure (FRP) Sensor Circuit Performance Description: The comprehensive component monitor (CCM) checks the FRP for acceptable fuel pressure. The test fails when the fuel pressure falls below or exceeds a minimum/maximum calibrated value for a calibrated period of time. Possible Causes:
  • High fuel pressure.
  • Low fuel pressure.
  • Damaged FRP sensor.
  • Excessive resistance in the circuit.
  • Vacuum leaks.
  • Low or no fuel.
Diagnostic Aids: A FRP PID value during key on engine running (KOER) of 138 kPa (20 psi) to 413 kPa (60 psi) is acceptable. Application Key On Engine Off Key On Engine Running Continuous Memory Fuel rail pressure temperature (FRPT) sensor GO to DD34 Fuel rail pressure (FRP) sensor only GO to DD9 Fuel rail pressure (FRP) and fuel rail temperature (FRT) sensors GO to DD9


P0192 - Fuel Rail Pressure (FRP) Sensor Circuit Low Input Description: The comprehensive component monitor (CCM) monitors the FRP sensor circuit to the powertrain control module (PCM) for low voltage. If voltage falls below a calibrated limit for a calibrated amount of time during testing, the test fails. Possible Causes:
  • FRP signal shorted to SIG RTN or PWR GND.
  • Damaged FRP sensor.
Diagnostic Aids: A FRP PID value during the key on engine off (KOEO) or key on engine running (KOER) less than 0.3 volt indicates a hard fault. Application Key On Engine Off Key On Engine Running Continuous Memory Fuel rail pressure temperature (FRPT) sensor GO to DD26 GO to DD26 GO to DD39 Fuel rail pressure (FRP) sensor only GO to DD1 GO to DD1 GO to DD14 Fuel rail pressure (FRP) and fuel rail temperature (FRT) sensors GO to DD1 GO to DD1 GO to DD14


P0193 - Fuel Rail Pressure (FRP) Sensor Circuit High Input Description: The comprehensive component monitor (CCM) monitors the FRP sensor circuit to the powertrain control module (PCM) for high voltage. If voltage exceeds a calibrated limit for a calibrated amount of time during testing, the test fails. Possible Causes:
  • FRP signal shorted to VREF or VPWR.
  • FRP signal open.
  • Damaged FRP sensor.
Diagnostic Aids: An FRP signal high condition can be caused by any number of conditions, including a short on FRP signal to VREF, a more positive voltage level, 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 Fuel rail pressure temperature (FRPT) sensor GO to DD26 GO to DD26 GO to DD39 Fuel rail pressure (FRP) sensor only GO to DD1 GO to DD1 GO to DD14 Fuel rail pressure (FRP) and fuel rail temperature (FRT) sensors
P1233 Ford Fuel Pump Driver Module Diagnostics and Repair

FPDM Live

Jan 14, 2018 | Ford Cars & Trucks

1 Answer

I want to no this code for a ford explorer, gas problem, code p0193


Fault Code Definition P0193
  • Fuel Rail Pressure Sensor Circuit High Input
What does this mean?
The Powertrain Control Module (PCM) needs to know the fuel pressure at all times so it can effectively control the fuel injectors and deliver the optimal amount of fuel into the engine's combustion chambers for maximum power and economy while maintaining the lowest tailpipe emissions.
Code P0193
indicates that the signal from the Fuel Rail Pressure Sensor and/or its circuit is too high, indicating a fuel pressure condition that is abnormally high.

Mar 05, 2017 | Ford Cars & Trucks

1 Answer

Where is fuel rail pressure sensor high input located on a mercury mountaineer


If you are talking about a trouble code for the pressure sensor, the sensor may be telling the computer the fuel pressure is too high. The sensor is mounted in the fuel rail on the engine.

Aug 25, 2014 | 2004 Mercury Mountaineer

1 Answer

Code PO 193


Fuel Rail Pressure Sensor Circuit high input.
1. Unplug the negative battery terminal connector (black one, NOT red) from the battery and set aside. Doing this will also reset your check engine light as well.

2. Unplug the fuel pump fuse. Check owners manual for proper location in underhood fuse block.

3. Start vehicle and run it until it dies to relieve pressure.
4. Disconnect the electrical connector to the sensor on fuel rail.

5. Remove bolts to fuel rail pressure sensor.

6. Disconnect hose on back of Pressure Sensor.

7. Once everything is disconnected, pull straight up on sensor. Be sure to pull up with a little effort, it has a snug fit. Of note, you will see gasoline when you lift up the FRPS so be careful so as not to let debris fall in there.

8. Install new FRPS and reconnect hose and electrical connector.

9. Put the fuel pump fuse back in.

10. Reconnect negative battery terminal.

11. BEFORE YOU START THE VEHICLE, you need to prime it. Do this by cycling the key to the ON position and Off position several times for the fuel pressure to build back up . Do this 2-3 times then start your vehicle.
CHECK FOR LEAKS, TEST DRIVE FOR ABOUT 10 MILES OR SO AND BE SURE EVERYTHING IS OK AND CHECK ENGINE LIGHT DOES NOT RETURN.
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Jun 14, 2013 | 2005 Ford Escape

1 Answer

P0191 and p0113 on 2007 ford tauras


Someone has no idea how to diagnose a ford,
I would say

PO 113--Intake Air Temp Circuit High Input
PO 191--Fuel Rail Pressure Sensor Circuit Range/Performance

I wouldn't be installing any parts, until you find the real issues
there,try a different shop or dealer

A fuel pump & cps sensor & give it back to you half
fixed
That was nice & typical of all the people that come here

Mar 10, 2013 | Cars & Trucks

1 Answer

Check engine light came on in 2003 Lincoln LS, 3.9 ltr. Pulled code of PO193. Changed gas filter, nothing. Changed all 8 spark plugs and still getting same code. Just finished changing all 8 fuel injectors...


code p 0193 refers to fuel rail pressure (FRP) sensor---high input===causes ---wiring short to positive ---FRP sensor

code p0358 refers to ignition coil H -primary/ secondary--circuit malfunction ===causes --wiring--ignition coil---ECM

Jan 13, 2018 | 2003 Lincoln LS

2 Answers

Getting p0193 code for my 2005 ford freestar se


P0193 is "Fuel Rail Pressure Sensor Circuit High Input"
Meaning: Car's computer is reading input voltage from the FRP (Fuel Rail Pressure) sensor as
voltage out of the acceptable range, because the voltage is too above the acceptable range.

assuming you are running gasoline...

check for fuel in the vacuum hose of the FRP sensor after running engine at idle for 2 minutes. if not, check fuel pressure. Check fuel pressure by connecting a fuel pressure gauge to the Schrader
connector on the fuel rail, which you will find under a small (black, usually) plastic protective cap.

If the fuel pressure is indeed too high, your fuel pressure regulator has gone bad.

if fuel pressure is good, check voltage between Sensor connector Vref (Pin#3 LB (light blue)) and
Signal Return (Pin#4 GY/RD (gray/red)), which should be 4.0V-5.5V with key ON.
The acceptable voltage range from the FRP sensor to the car's computer is 4.0-5.5 volts.
What the P0193 code is saying is that the voltage from the FRP sensor is over 5.5 volts,
and therefore it's "High Input."

If voltage from the FRP sensor is bad (out of range high, presumably), then replace the FRP
sensor and reset the OBD-II code.

If the voltage output from the FRP sensor is also good, the car's computer is kaflooey, so
you'd need to replace the car computer (which is costly), so replace the car's computer as a
last resort.

Jun 21, 2011 | 2005 Ford Freestar

1 Answer

Fuel rail system pressure too high ford freestar 04'. Is the high pressure sensor bad or is there a pressure regulator that whet bad?


What is too high? The specification for that vehicle is 35-70 Psi (2.4-4.8 kg/cm2)
What is the data reading on the Fuel Rail Pressure Transducer sensor?
What, exactly, are you trying to fix? Do you have rich oxygen sensor codes?

May 13, 2011 | Ford Freestar Cars & Trucks

1 Answer

I,have a leak in sidewall,do you think thats way come on check engine light,with p1132 and p1152 error codes.


CODE P1132 LACK OF HO2S SWITCHING HO2S SIGNAL HIGH INPUT. CODE P1152 LACK OF HO2S 21 SWITCHING HO2S SIGNAL HIGH INPUT. LEAKING SIDEWALL ONE POSSIBLE CAUSE IS HIGH FUEL PRESSURE.AND LEAKING FUEL INJECTORS.YOU COULD HAVE FAULTY FUEL RAIL TEMPERATURE PRESSURE SENSOR.

Jan 18, 2011 | 2002 Ford Escape

2 Answers

I have a dodge truck 2004 cummins engine with codes reading. p o 0191, 0193, 0652, 0341, 0069 can you tell me what all the codes mean?


0191 is fuel rail pressure sensor circuit range/performance 0193 fuel rail sensor circuit high input 0652 sensor reference voltage b circuit low 0341 cam shaft position sensor a circuit range/performance (bank1 or single sensor) and 0069 map barometric pressure correlation
i hope that helps you some what

Aug 14, 2010 | 2004 Dodge Ram 2500

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