What Does P1747 Mean?
The electronic pressure control solenoid circuit has a short circuit condition, either to ground or power. This prevents proper transmission line pressure regulation and can damage the transmission control module.
Safety Warning
Critical issue - transmission line pressure cannot be controlled, causing potential harsh engagement, slipping, or complete transmission failure. Continued driving may cause severe transmission damage or TCM failure.
Common Causes
40%
Shorted electronic pressure control solenoid
30%
Short circuit in wiring harness to ground or power
15%
Transmission fluid contamination causing solenoid short
10%
Damaged transmission connector causing terminal short
5%
Failed TCM with internal short
Diagnostic Steps
1
Step 1: Disconnect EPC solenoid connector and measure resistance (should be 3-8 ohms, not zero)
2
Step 2: Check for short to ground or power in wiring harness with solenoid disconnected
3
Step 3: Inspect connector pins for damage, corrosion, or crossed terminals
4
Step 4: Measure insulation resistance between solenoid terminals and case (should be >10k ohms)
5
Step 5: If wiring and connector are good, drop pan and replace shorted EPC solenoid
Estimated Repair Cost
$200 - $1,400
Parts + labor, varies by vehicle and location
The electronic pressure control solenoid circuit has a short circuit condition, either to ground or power. This prevents proper transmission line pressure regulation and can damage the transmission control module.
The most common cause of P1747 (Electronic Pressure Control Solenoid - Short circuit) is: Shorted electronic pressure control solenoid
Typical repair costs for P1747 range from $200 to $1,400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Critical issue - transmission line pressure cannot be controlled, causing potential harsh engagement, slipping, or complete transmission failure. Continued driving may cause severe transmission damage or TCM failure.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1747 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission
Difficulty
Type
Manufacturer
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