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Engine-Codes – Generic – P1746

P1746 Code - Electronic Pressure Control Solenoid Low Conditions

Quick Answer

The P1746 code indicates a problem with the Electronic Pressure Control (EPC) solenoid in the transmission system. Common causes include Faulty EPC solenoid, Low transmission fluid levels, Clogged transmission filter. 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
P1746 indicates Electronic Pressure Control Solenoid Low Conditions.
Common causes
Common causes include Faulty EPC solenoid, Low transmission fluid levels, Clogged transmission filter.
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 08, 2024
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Code P1746 Description

The P1746 code indicates a problem with the Electronic Pressure Control (EPC) solenoid in the transmission system. The EPC solenoid is responsible for regulating the hydraulic pressure inside the transmission to ensure smooth gear shifts. When the EPC solenoid is not functioning properly or is experiencing low pressure conditions, it can lead to a variety of issues with the transmission system.

OBDII Code P1746 - Electronic Pressure Control Solenoid Low Conditions
P1746 Code - Electronic Pressure Control Solenoid Low Conditions

Common Causes of P1746

  1. Faulty EPC solenoid
  2. Low transmission fluid levels
  3. Clogged transmission filter
  4. Electrical issues within the transmission control module
  5. Wiring or connector problems

Symptoms of P1746

  1. Harsh or delayed shifting
  2. Slipping gears
  3. Transmission overheating
  4. Illuminated check engine light
  5. Decreased fuel efficiency

How to Fix P1746

  1. Begin by checking the transmission fluid level and condition. Top up or replace the fluid if necessary.
  2. Inspect the EPC solenoid for any signs of damage or wear. Replace the solenoid if it is faulty.
  3. Check the transmission filter for any clogs or debris. Replace the filter if needed.
  4. Inspect the wiring and connectors related to the EPC solenoid and transmission control module. Repair any damaged wiring or connections.
  5. Clear the diagnostic trouble codes and test drive the vehicle to confirm that the issue has been resolved.

Cost to Fix P1746

The cost of repairing a P1746 code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of replacing an EPC solenoid can range from $200 to $500, including parts and labor. Additional costs may be incurred if other components need to be replaced or if further diagnosis is required. It's recommended to consult with a trusted mechanic or repair shop to get an accurate estimate for addressing this issue.

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Code P1746 Information for Specific Makes

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.

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