Question about 2002 Ford E250

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My tcs flashes on my 99 4R70W. i checked for a code, got P1747. Pres Ctrl Sol. A Circuit Shorted. ther are no visable shorts on exterier wires. there is trans fliud in the conector on the trans. could this be the short, or should i look at the wires inside? if they are ok, is it the Pres Ctrl Sol. ?

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6ya6ya
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Posted on Jan 02, 2017

  • 65 Answers

SOURCE: 1st and o/d gear do not work and O/D light flashes

dealers are very rude and they will all ways charge you more money then needed. I got codes for my car from and personal owner (small business) they did a check engain scan and the codes came up and they were very nice after I had asked if they would please write down the meanings of the codes, When they did that there were some that they did not know but the parts store like schuck's will scan for free and again they will also write down what part you will need for the code and they should also know about those other codes as well. I do live in Vancouver, Wa and I'm not sure where you are located but the people that are helping you should like they really don"t want to help. Rude people every where.
Nikki2913

Posted on Nov 29, 2008

tripletauto
  • 1450 Answers

SOURCE: ac/blower motor short in wire

THIS is really something I cant tell you where it is. just need to trce back the wires from the blower motor and see if you see damage to the harness. starting with basics,check for power and ground at blower motor. then check power at blower resistor. coming in and going out.just have to keep checking wire till find bad spot shorted means it is ggrounding out with another wire or has rubbed on the body somewhere

Posted on Dec 10, 2008

csmock132
  • 4669 Answers

SOURCE: hard shifting from first gear to second after complete stop

It is in the bottom pan. In order to replace it you have to replace all the solenoids. They are all built into a solenoid pack. What does it do when it shifts to 2nd? Not at all or slips?

Posted on Jun 08, 2009

skychief2001
  • 21873 Answers

SOURCE: i got a code p1747 electronic pressure control solonoid short circuit where is this located and will that cause my truck to throw all the shift solonoid codes

The solenoids are inside the transmission, if you are getting more than one code you may have a problem with the wiring harness going into the trans.

Posted on Oct 12, 2012

reaperautomo
  • 206 Answers

SOURCE: EPC SOLENOID SHORT CIRCUIT CODES P1747

Controls the shift points. Replace the EPC. Its on the transmission.

Posted on Oct 16, 2012

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2002 mercury sable epc solnoid code p1747 obd ll it said disconnected


P1747 Pressure Control Solenoid A Short Circuit

Sorry absolutly no idea what this is refering too on this vehicle,i would assume its the fuel pressure ,a sensor on the fuel rail but although this vehicle is the same as our ford mondeo chassis wise the small petrol engines and mainly diesels that are bought here in europe will be different to the american cars,Its also the same chassis as a S type jaguar as well or so iam told

Aug 27, 2014 | 2002 Mercury Sable

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I have to error code with my jeep grand Cherokee Laredo 1999 the code are 1491,1495,753,136


P1491 Rad Fan Control Relay Circuit An open or shorted condition detected in the radiator fan control relay control circuit. This includes PWM solid state relays.P1495 Leak Detection Pump Solenoid Circuit An open or shorted condition detected in the Leak Detection Pump (LDP) solenoid circuit.P0753 (M) Trans 3-4 Shift Sol/Trans Relay Circuits An open or shorted condition detected in the overdrive solenoid control circuit or Trans Relay Circuit in JTEC RE transmissions. Was MIL code 45. P0753 (M) Trans 3-4 Shift Sol/Trans Relay Circuits An open or shorted condition detected in the transmission 2-4 shift solenoid circuit (4-speed auto. trans. only).P0136 (M) 1/2 O2 Sensor Heater Circuit Malfunction Oxygen sensor heater element malfunction.

Aside from getting into an accident and having your wiring harness severely damaged, the other likely suspect is your PCM. These codes are not related to each other and indicate a much larger problem.

Nov 02, 2013 | 1999 Jeep Grand Cherokee

1 Answer

F 150 Code P1747


This code is a trany solenoid failure code that pertains to the epc circuit. When this circuit fails, the vehicle will go to a limp mode or harsh shifting including hesitation and stalling. To check verify when the code appears after the code is reset... use a DVOM and check the voltages going to the epc (electronic pressure control) soleniod. To locate use a wiring diagram so you can locate the epc wires. Once tested, you can verify if the solenoid is working or getting proper voltage signal from the engine computer.

If you decide to replace the epc sensor, make sure the wirings connected to it is not shorting out due to bad insulation or poor routing. In most cases, a defective shorted wire is enough to make the epc solenoid to fail. Note: during the test, make sure the trany is warmed enough since some of these shorted wires will only come out after the vehicle is running for sometime which will cause intermittent flashing of the code. Finally, you can also check the integrity of the wires by tracing it from the trany upto the right module using a wiring diagram. Any DIY person can do this as long as he has the map (wiring diagram) to do it.

Apr 12, 2013 | Cars & Trucks

1 Answer

How to understand trouble coeds on Ford F-250 super duty truck


Trouble Code: P0743

TCC Solenoid Circuit Malfunction
Possible Causes:


TCC solenoid control circuit is open. TCC solenoid control circuit is shorted to ground. TCC solenoid wiring harness connector is damaged. TCC solenoid is damaged or it has failed. PCM has failed.Trouble Code: P0755

A/T Shift Solenoid 2/B Circuit Malfunction
Possible Causes:


SS2/B solenoid control circuit is open. SS2/B solenoid control circuit is shorted to ground. SS2/B solenoid wiring harness connector is damaged. SS2/B solenoid is damaged or has failed. PCM has failed.Trouble Code: P1747

A/T EPC Solenoid Circuit Malfunction
Possible Causes:


n/a This code doesn't have a solution.
.

Oct 06, 2012 | Cars & Trucks

3 Answers

Check engine light came on


What do you mean "can't find code"? If the check engine light is on, there is a fault code stored in your onboard computer - that's the way it works. If you are using a generic OBD code reader, that is most likely the reason you cannot find any codes. You need to use a scanner that has the correct software to access your ENTIRE computer network, not just the "continuous memory" or "generic" side of your computer system.

The window problem is a seperate problem and must be diagnosed accordingly.

Apr 23, 2012 | Daewoo Matiz Cars & Trucks

1 Answer

P1747


Generallry, codes P1746 and P1747 are both related to the EPC electrical circuits. These codes are only generted by and electrical fault. Inspect the wiring connector at the transmission. You may have have to use a mirror to inpsect the connector on the transmission itself. Disconnect both the transmission connector and the pcm connector and check the white/yellow wire (pin 11 at trans connector and pin 81 and PCM) check this wire for an open circuit, shorts to power or ground.
If the wiring checks ok the PCM driver for the epc has failed and the PCM will need to be replaced.

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Mar 29, 2012 | 2000 Ford Expedition

1 Answer

What does the code po748 refer to


Symptom:

P-0748 GOV PRESSURE SOL CONTROL/TRANS RELAY CIRCUITS

When Monitored and Set Condition:

P-0748 GOV PRESSURE SOL CONTROL/TRANS RELAY CIRCUITS

When Monitored: Continuously with the key on.

Set Condition: This code is set if the voltage detected on the Governor Pressure Solenoid

Control Circuit at the PCM is different than the expected voltage for 4.8 seconds.

POSSIBLE CAUSES

NO POSSIBLE CAUSES REMAINING

FUSED B(+) CIRCUIT OPEN

SOLENOID AND HARNESS ASSEMBLY DEFECTIVE

GOVERNOR PRESSURE SOLENOID DEFECTIVE

TRANSMISSION CONTROL RELAY DEFECTIVE

GOV PRESSURE SOLENOID CONTROL CKT SHORT TO GROUND

GOVERNOR PRESSURE SOLENOID CONTROL CIRCUIT OPEN

GOVERNOR PRESSURE SOLENOID WIRING HARNESS INTERMITTENT DEFECT

GOVERNOR PRESSURE SOLENOID WIRING HARNESS OBSERVABLE DEFECT

TRANSMISSION RELAY OUTPUT CIRCUIT OPEN

TRANSMISSION RELAY OUTPUT CIRCUIT SHORTED TO GROUND

PCM DEFECTIVE (GOV PRESSURE SOLENOID SHORT TO VOLTAGE)

PCM DEFECTIVE (RES IN RANGE)

PCM DEFECTIVE (GOVERNOR PRESSURE SOLENOID DEFECTIVE)

PCM DEFECTIVE (CONTROL CIRCUIT SHORTED)
PCM DEFECTIVE (SOLENOID & HARNESS ASSEMBLY DEFECTIVE)

Feb 03, 2012 | 1999 Dodge Dakota

1 Answer

Dtc p1780 is there an easy fix?


CODE P1780 - TRANSMISSION CONTROL SWITCH OUT OF SELF TEST RANGE.POSSIBLE CAUSES TO PROBLEM, TCS CIRCUIT OPEN OR SHORTED IN THE WIRING HARNESS, TCS NOT CYCLED DURING SELF TEST, TCS IS DAMAGED OR THE PCM HAS FAILED.

Mar 02, 2011 | 1999 Ford Explorer

3 Answers

1999 ford expedition - transmission slip?


the flashing O/D light usually means you have a bad speed sensor that sends speed info to the engine & trans computer.

Vehicle Speed Sensor The vehicle speed sensor (VSS) (Figure 42) is a variable reluctance or Hall-effect sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling.
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Vehicle Speed Sensor The vehicle speed sensor (VSS) (Figure 42) is a variable reluctance or Hall-effect sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling.

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Some trans use an OSS, Output Shaft Sensor instead of a VSS. Depends on which trans you have, 4R100 or 4R70W

Transmission Control Switch (TCS) and Transmission Control Indicator Lamp (TCIL)
The transmission control switch (TCS) is a momentary contact switch. When the switch is pressed, a signal is sent to the powertrain control module (PCM) to allow automatic shifts from first through fourth gears or first through third gears only. The PCM energizes the transmission control indicator lamp (TCIL) when the switch is off.

The TCIL indicates overdrive cancel mode activated (lamp on) and electronic pressure control (EPC) circuit shorted (lamp flashing) or monitored sensor failure.

Output Shaft Speed (OSS) Sensor
The output shaft speed (OSS) sensor is a magnetic pickup, located at the output shaft ring gear, that sends a signal to the powertrain control module (PCM) to indicate transmission output shaft speed. The OSS is used for torque converter clutch control, shift scheduling and to determine electronic pressure control.

Apr 18, 2009 | 1998 Ford Expedition

1 Answer

Explorer, 2000; 4.0 EFI: Engine runs fine in neutral & responds well when accelerator is depressed; shift to reverse or drive & engine runs very rough....with no power whatsoever. Scanned...


P1747 * EPC, wiring, PCM EPC solenoid circuit failure, shorted circuit or output driver Voltage through EPC solenoid is checked. An error will be noted if tolerance is exceeded. Short circuit causes minimum EPC pressure (minimum capacity) and limits engine torque (alternate firm). Go To Pinpoint Test
The EPC solenoid is shorted or the electrical circuit (wiring) or the transistor (driver) inside the computer is fried. do you know how to test a computer controlled circuit ?
How to test computer transistor driver without scan tool

Do you know how to find the circuit in question ?

And you are correct about these two codes as being not related . Do you know what evaporative emission system is ?


Wells EVAP Training with Sgt Tech P0440 P0441 P0442 etc

The Evaporative Emission Control System (EVAP) is used to prevent gasoline vapors from escaping into the atmosphere from the fuel tank and fuel system. The EVAP system usually requires no maintenance, but faults can turn on the Check Engine light and prevent a vehicle from passing an OBD II plug-in emissions test.
EVAP Evaporative Emission Control System - AA1Car.com
http://www.bbbind.com/free_tsb.html you can find free wiring diagrams here . Do you know how to use a wiring diagram ?

P1451 - EVAP Control System Canister Vent Solenoid Circuit Malfunction Monitors the canister vent (CV) solenoid circuit for an electrical failure. The test fails when the signal moves outside the minimum or maximum allowable calibrated parameters for a specified canister vent duty cycle by PCM command.
  • VPWR circuit open
  • CV solenoid circuit shorted to PWR GND or CHASSIS GND
  • Damaged CV solenoid
  • CV solenoid circuit open
  • CV solenoid circuit shorted to VPWR
  • Damaged PCM
To verify normal function, monitor the EVAP canister vent solenoid signal PID EVAPCV and the signal voltage (PCM control side). With the valve open, EVAPCV will indicate 0% duty cycle and the voltage approximately equal to battery voltage. When the valve is commanded fully closed, EVAPCV will indicate 100% duty cycle and a voltage drop of 4 volts minimum is normal. Output test mode may be used to switch output ON/OFF to verify function. This is another electrical circuit problem .
Do you know how to use a DVOM - digital volt ohm meter ?
Do you know that P1747 (electronic press control solenoid short circuit) Is a transmission problem . This solenoid controls the fluid pressure .

May 10, 2017 | Ford Explorer Cars & Trucks

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