Engine-Codes.com
Engine-Codes – Honda – P0798 Honda

P0798 Honda Code - Pressure Control Solenoid 'C' Circuit

Quick Answer

The P0798 code for Honda vehicles indicates a problem with the Pressure Control Solenoid 'C' circuit. Common causes include Faulty pressure control solenoid 'C', Wiring or connector issues in the circuit, Low transmission fluid levels or degraded fluid. 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
P0798 Honda indicates Pressure Control Solenoid 'C' Circuit.
Common causes
Common causes include Faulty pressure control solenoid 'C', Wiring or connector issues in the circuit, Low transmission fluid levels or degraded fluid.
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 10, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0798 Honda Description

The P0798 code for Honda vehicles indicates a problem with the Pressure Control Solenoid 'C' circuit. This solenoid is responsible for regulating the hydraulic pressure in the transmission, which is crucial for proper shifting and overall transmission performance. When this circuit malfunctions, it can lead to issues such as harsh shifting, delayed engagement, or even transmission slippage.

OBDII Code P0798 Honda - Pressure Control Solenoid 'C' Circuit
P0798 Honda Code - Pressure Control Solenoid 'C' Circuit

Common Causes of P0798 Honda

  1. Faulty pressure control solenoid 'C'
  2. Wiring or connector issues in the circuit
  3. Low transmission fluid levels or degraded fluid
  4. Internal transmission problems
  5. ECM (Engine Control Module) failure

Symptoms of P0798 Honda

  1. Harsh or erratic shifting
  2. Delayed engagement when shifting gears
  3. Transmission slipping
  4. Reduced fuel efficiency
  5. Illuminated check engine light

How to Fix P0798 Honda

  1. Begin by diagnosing the exact cause of the issue using a scan tool to retrieve the trouble codes and conducting a thorough inspection of the transmission system.
  2. Check the wiring and connectors related to the pressure control solenoid 'C' for any signs of damage or corrosion. Repair or replace as necessary.
  3. Test the pressure control solenoid 'C' for proper operation. If it is found to be faulty, replace it with a new unit.
  4. Inspect the transmission fluid level and condition. Top up or change the fluid if needed.
  5. Clear the trouble codes from the ECM and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0798 Honda

The cost of repairing a Pressure Control Solenoid 'C' circuit issue can vary depending on the extent of the problem and the specific components that need to be replaced. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates can vary, so it's best to get a personalized quote from a reputable auto repair shop.

What does this mean?

Tech Notes for P0798 Honda

When a transmission solenoid is malfunctioned, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is dirty, it's recommended to change the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a mechanical transmission failure and that the transmission will need to be rebuilt or replaced.

When is the Code Detected?

The P0798 is triggered when the ECM detects an open or short circuit in shift solenoid valves

Need more information about the P0798 Honda code?

Need more information on how to fix the P0798 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0798 Honda code diagnosed by a professional: Find a repair shop in your area

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 P0798 Honda Code

No Frequently Asked Questions about P0798 Honda Code found.

Discuss the causes and fixes for P0798 Honda OBDII Code

Submit a New Comment

Code P0798 Honda comments

No comments found for this page.