Got a code p1747 what could be the problem for this code

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That is a transmission code...

P1747 (EPC Shift Solenoid). Not uncommon for police interceptors...

Here is a discussion of other possible causes:

http://towtalk.net/forum/topic/2000-Crown-Vic-Police-Interceptor-.htm

The 500 code is vehicle speed sensor,the other is spooky BUS system failure ECM?EGS controller. The 500 is probably your shift problem. Hopefully the other is a ghost.Seems you should be able to manually shift and get low gear

P1747 Pressure Control Solenoid "A" Short Circuit
P0500 Vehicle Speed Sensor
_____________
maxidas ds708

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

P1747 Ford Electronic Pressure Control Solenoid Short Circuit
Take your vehicle to a qualified repair shop .

P1747
A/T EPC (pressure control soleniod) Solenoid Circuit Malfunction
P1760.
A/T EPC Solenoid Circuit Malfunction
I would think that the solenoid has failed.

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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go to autozone and get the codes. they will test for free.

Message Center Display
The following messages may be displayed on the message center.
This message center will display CHECK TRANSMISSION if the following codes have been set.


DTC Codes Possible Faults P1746, P1747, P1760 Electronic pressure control solenoid P0743, P1767 Torque converter clutch circuit P0750, P0755, P0760 Shift solenoid circuit P1714, P1715, P1716 ISIG P0731, P0732, P0733, P0734 SFT error P0741, P1742, P1743, P1744 Torque converter clutch error P1783 Over temperature P1700 NEV error P0712, P0713, P0710,
P1710, P1713, P1718 Transmission fluid
temperature error P0705, P0708, P1704 Transmission range sensor error P0500, P0503 Vehicle speed sensor error P0715 Turbine shaft speed error
NOTE: For codes. For additional information, refer to Diagnostic Trouble Code Chart.

Code definition is Electronic Pressure Control (EPC) Solenoid. This solenoid is located in the trans pan. Driving the explorer without getting it fixed could also wear down other parts in your transmission!