AutoCodesHonda – P1738 Honda

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

Quick Answer

The 2nd Clutch Pressure Switch is normally an open switch, the switch closes when the 2nd clutch oil press is applied to it. Common causes include Faulty 2nd Clutch Pressure Switch, 2nd Clutch Pressure Switch harness is open or shorted, 2nd Clutch Pressure Switch circuit poor electrical connection. 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, 2nd Clutch Pressure Switch harness is open or shorted, 2nd Clutch Pressure Switch circuit poor electrical connection.
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.
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Code Popularity 72,545
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Jul 07, 2020
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Code P1738 Honda Description

The 2nd Clutch Pressure Switch is normally an open switch, the switch closes when the 2nd clutch oil press is applied to it. Powertrain Control Module (PCM) uses information from the switch to adjust hydraulic pressure application timing. The Powertrain Control Module monitors the 2nd Clutch Pressure Switch. The Powertrain Control Module will set the Diagnostic Trouble Code (DTC) when it detects a 2nd Clutch Pressure Switch malfunction.
OBDII Code P1738 Honda - Problem in 2nd Clutch Pressure Switch Circuit - AutoCodes.com
P1738 Honda Code - Problem in 2nd Clutch Pressure Switch Circuit

What are the Possible Causes of the DTC P1738 Honda?

  • Faulty 2nd Clutch Pressure Switch
  • 2nd Clutch Pressure Switch harness is open or shorted
  • 2nd Clutch Pressure Switch circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1738 Honda?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1738 Honda code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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.

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