AutoCodes – Honda – P1730 Honda

P1730 Honda Code - Problem In Shift Control System

Quick Answer

Hydraulic pressure to each clutch is controlled by the shift valve. Common causes include Faulty Shift Solenoid Valves, Shift Solenoid Valves harness is open or shorted, Shift Solenoid Valves 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: P1730 Honda indicates Problem In Shift Control System.
Common causes: Common causes include Faulty Shift Solenoid Valves, Shift Solenoid Valves harness is open or shorted, Shift Solenoid Valves 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 14,012

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1730 Honda Description

Hydraulic pressure to each clutch is controlled by the shift valve. The shift valve activates according to the ON/OFF status of shift solenoid valves A, B, C, D, and E. Hydraulic pressure supply in D position is shown above. The line pressure or the clutch pressure control pressure (CPC A, CPC B, or CPC C) is supplied to each clutch by the shift valve activated. The Powertrain Control Module (PCM) computes the actual ratio of mainshaft to countershaft revolutions. If a difference between the actual ratio and the commanded gear occurs when shifting to each gear position, a malfunction in the shift solenoid valve or the hydraulic system is detected and a Diagnostic Trouble Code (DTC) is stored.

OBDII Code P1730 Honda - Problem In Shift Control System - AutoCodes.com — P1730 Honda Code - Problem In Shift Control System

What does this mean?

What are the Possible Causes of the DTC P1730 Honda?

Faulty Shift Solenoid Valves
Shift Solenoid Valves harness is open or shorted
Shift Solenoid Valves circuit poor electrical connection

How to Fix the DTC P1730 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1730 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 P1730 Honda Code

1. What are the common symptoms of OBDII code P1730 in a Honda related to the problem in the shift control system?

- Symptoms may include harsh shifting, erratic shifting behavior, transmission slipping, or the transmission not shifting at all.

2. What are some possible causes of OBDII code P1730 in a Honda?

- Common causes include issues with the shift control solenoid, low transmission fluid level, a faulty transmission control module, or wiring/connectivity problems.

3. How can I diagnose the problem causing OBDII code P1730 in my Honda?

- Diagnosis typically involves conducting a thorough inspection of the transmission system, checking for any visible signs of damage, and using a scan tool to retrieve specific transmission fault codes.

4. What are some repair tips for fixing the problem related to OBDII code P1730 in a Honda?

- Repair tips may include checking and topping up the transmission fluid, inspecting and replacing the shift control solenoid if necessary, ensuring all wiring connections are secure, and performing a transmission control module reset.

5. Can driving with OBDII code P1730 in a Honda cause further damage to the vehicle?

- Continuing to drive with this code present can potentially lead to more severe transmission issues over time, so it is recommended to address the problem promptly.

6. How much does it typically cost to repair OBDII code P1730 in a Honda at a professional auto repair shop?

- The cost of repairs can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

7. Is it safe to continue driving my Honda with OBDII code P1730 if the transmission is still functioning normally?

- It is generally not recommended to ignore the presence of this code even if the transmission is working fine, as it could indicate an underlying issue that may worsen over time.

8. Are there any preventive maintenance steps I can take to avoid encountering OBDII code P1730 in my Honda?

- Regularly checking and changing the transmission fluid as recommended by the manufacturer, and addressing any transmission-related symptoms promptly can help prevent this code from appearing.

9. Can a DIY enthusiast with some mechanical knowledge attempt to fix OBDII code P1730 in a Honda at home?

- Depending on the specific cause of the issue, some repairs related to this code may be tackled by DIY enthusiasts, but more complex problems may require professional assistance.

10. How long does it typically take to repair OBDII code P1730 in a Honda?

- The repair time can vary based on the extent of the issue and the specific repairs needed, but it may take a few hours to a full day to address the problem effectively.