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Engine-Codes – Generic – P1747

P1747 Code - Electronic Pressure Control Solenoid 'A' Short Circuit

Quick Answer

The P1747 diagnostic trouble code indicates that there is a short circuit in the Electronic Pressure Control (EPC) solenoid 'A'. Common causes include Damaged wiring or connectors, Faulty EPC solenoid 'A', Issues with the transmission control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1747 indicates Electronic Pressure Control Solenoid 'A' Short Circuit.
Common causes
Common causes include Damaged wiring or connectors, Faulty EPC solenoid 'A', Issues with the transmission control module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1747 Description

The P1747 diagnostic trouble code indicates that there is a short circuit in the Electronic Pressure Control (EPC) solenoid 'A'. The EPC solenoid is responsible for regulating the hydraulic pressure within the transmission, which is crucial for shifting gears smoothly and efficiently. When a short circuit occurs in the EPC solenoid 'A', it can disrupt the transmission's ability to function properly, leading to various performance issues.

OBDII Code P1747 - Electronic Pressure Control Solenoid 'A' Short Circuit
P1747 Code - Electronic Pressure Control Solenoid 'A' Short Circuit

Common Causes of P1747

  1. Damaged wiring or connectors
  2. Faulty EPC solenoid 'A'
  3. Issues with the transmission control module
  4. Corrosion in the transmission system
  5. Electrical short circuits

Symptoms of P1747

  1. Harsh or delayed shifting
  2. Erratic transmission behavior
  3. Transmission slippage
  4. Illuminated Check Engine Light
  5. Reduced fuel efficiency

How to Fix P1747

  1. Diagnose the code using a scan tool to confirm the issue with the EPC solenoid 'A'.
  2. Inspect the wiring and connectors for any damage or corrosion.
  3. Test the EPC solenoid 'A' for proper operation and replace if necessary.
  4. Check the transmission control module for any faults and address as needed.
  5. Clear the trouble code, reset the system, and test drive the vehicle to ensure proper transmission function.

Cost to Fix P1747

The typical repair costs for addressing a P1747 code can range from $200 to $500, depending on the extent of the damage and the specific components that need to be replaced. This estimate includes the cost of the EPC solenoid 'A', any necessary wiring repairs, and labor charges. However, it is important to note that the actual repair costs can vary based on the location, vehicle make and model, and the rates of the auto repair shop. It is advisable to consult with a professional mechanic to get an accurate estimate for the repair.

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Code P1747 Information for Specific Makes

  • P1747 Ford — Electronic Pressure Control Solenoid 'A' Short Circuit
  • P1747 Hyundai — TCU-ECU Communication Line #1 Malfunction
  • P1747 Lincoln — Electronic Pressure Control Solenoid 'A' Short Circuit
  • P1747 Mazda — Electronic Pressure Control Solenoid 'A' Short Circuit
  • P1747 Mercedes-Benz — Electronic Gear Selector Module: Defective Interaction of CAN With Control Unit Instrument Cluster
  • P1747 Mercury — Electronic Pressure Control Solenoid 'A' Short Circuit
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1747 Code

1. What are the common symptoms of OBDII code P1747 (Electronic Pressure Control Solenoid 'A' Short Circuit)?

The common symptoms of this code may include harsh shifting, transmission slipping, decreased fuel efficiency, and the transmission going into limp mode.

2. What can cause the Electronic Pressure Control Solenoid 'A' Short Circuit code P1747?

The code P1747 can be caused by a faulty electronic pressure control (EPC) solenoid, damaged wiring or connectors, low transmission fluid levels, or internal transmission issues.

3. How serious is OBDII code P1747?

OBDII code P1747 should be addressed promptly to prevent further damage to the transmission. Ignoring this code can lead to more severe transmission problems and potentially costly repairs.

4. Can I drive my vehicle with the P1747 code present?

It is not recommended to drive your vehicle with the P1747 code present, as it can lead to transmission issues and potential safety hazards. It's best to address the issue as soon as possible.

5. How can I diagnose the cause of OBDII code P1747?

Diagnosing the cause of P1747 typically involves using a scan tool to read the code, checking the transmission fluid level and condition, inspecting wiring and connectors, and testing the EPC solenoid for proper function.

6. Can I repair OBDII code P1747 myself?

If you have experience working on automotive electronics and transmissions, you may be able to repair the P1747 code yourself by replacing the EPC solenoid, repairing damaged wiring, or addressing low fluid levels. Otherwise, it's best to consult a professional mechanic.

7. How much does it cost to repair OBDII code P1747?

The cost of repairing OBDII code P1747 can vary depending on the underlying cause, parts needed, and labor rates. It's recommended to get a diagnosis from a mechanic to obtain an accurate repair cost estimate.

8. Will resetting the trouble codes make the P1747 code disappear?

Resetting the trouble codes may temporarily clear the P1747 code, but if the underlying issue causing the code is not addressed, it is likely to reappear once the vehicle is driven again.

9. Can a faulty EPC solenoid cause other transmission issues besides code P1747?

Yes, a faulty EPC solenoid can cause a range of transmission issues beyond triggering the P1747 code, including erratic shifting, slipping gears, and overall poor transmission performance.

10. Is it necessary to replace the EPC solenoid if OBDII code P1747 is triggered?

Replacing the EPC solenoid is often the most effective solution when dealing with the P1747 code. However, it's essential to diagnose the issue accurately to ensure that the solenoid is the root cause of the problem.

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