Engine-CodesHonda – P1738 Honda

P1738 Honda Code - Problem in 2nd Clutch Pressure Switch Circuit

Quick Answer

The P1738 Honda code indicates a problem in the 2nd Clutch Pressure Switch Circuit in the vehicle's transmission system. Common causes include Faulty 2nd Clutch Pressure Switch, Damaged wiring or connectors in the circuit, Malfunctioning 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
P1738 Honda indicates Problem in 2nd Clutch Pressure Switch Circuit.
Common causes
Common causes include Faulty 2nd Clutch Pressure Switch, Damaged wiring or connectors in the circuit, Malfunctioning 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.
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1738 Honda Description

The P1738 Honda code indicates a problem in the 2nd Clutch Pressure Switch Circuit in the vehicle's transmission system. This switch is responsible for monitoring the hydraulic pressure in the transmission's 2nd clutch. When this circuit malfunctions, it can lead to various issues with the transmission's operation, ultimately affecting the vehicle's performance.

OBDII Code P1738 Honda - Problem in 2nd Clutch Pressure Switch Circuit
P1738 Honda Code - Problem in 2nd Clutch Pressure Switch Circuit

Common Causes of P1738 Honda

  1. Faulty 2nd Clutch Pressure Switch
  2. Damaged wiring or connectors in the circuit
  3. Malfunctioning transmission control module
  4. Low transmission fluid level
  5. Internal transmission issues

Symptoms of P1738 Honda

  1. Harsh shifting between gears
  2. Delayed shifting or difficulty engaging gears
  3. Illumination of the Check Engine Light
  4. Transmission slipping
  5. Reduced fuel efficiency

How to Fix P1738 Honda

  1. Start by diagnosing the specific cause of the issue using a scan tool to retrieve the fault codes and pinpoint the problem.
  2. Inspect the 2nd Clutch Pressure Switch and its wiring for any signs of damage or wear. Replace any faulty components.
  3. Check the transmission fluid level and quality. Top up or replace the fluid if necessary.
  4. Test the transmission control module to ensure it is functioning correctly. Replace if needed.
  5. Clear the fault codes and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P1738 Honda

The cost of repairing a problem in the 2nd Clutch Pressure Switch Circuit can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the parts for this repair can range from $50 to $200, while the labor costs can be anywhere from $100 to $300. Overall, you can expect to pay between $150 to $500 for this repair. It's important to keep in mind that these are rough estimates, and actual costs can vary based on factors such as location, vehicle make and model, and the shop's labor rates. Be sure to get a detailed quote from a reputable auto repair shop before proceeding with the repairs.

Tech Notes for P1738 Honda





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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 P1738 Honda Code

No Frequently Asked Questions about P1738 Honda Code found.

Discuss the causes and fixes for P1738 Honda OBDII Code

  • I'm having this problem I've replaced the sensor changed the fluid but nothing changed could there be another problem that's causing this code 1738 the car is a 2001 Honda accord Ex V6 any help will be greatly appreciated. Will a car pass admission with this code

  • Which sensor did you replaced? Your vehicle wont pass the emissions test with any code.
    According to a national database of repairs for your model year, other than the 2nd Clutch Pressure Switch, the most likely cause of the problem is the Transmission Fluid Pressure Switch.