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P2808 Toyota Code - Pressure Control Solenoid 'G' Performance

Quick Answer

Changing from 1st to 6th is performed by the Engine Control Module (ECM) turning shift solenoid valves SL1, SL2, SL3, SL4, and SL on and off. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Pressure Control Solenoid 'G' valve (Shift Solenoid Valve SL4). 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
P2808 Toyota indicates Pressure Control Solenoid 'G' Performance.
Common causes
Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Pressure Control Solenoid 'G' valve (Shift Solenoid Valve SL4).
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 16,728
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2022
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Code P2808 Toyota Description

Changing from 1st to 6th is performed by the Engine Control Module (ECM) turning shift solenoid valves SL1, SL2, SL3, SL4, and SL on and off. If an open or short circuit occurs in any of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated.
The ECM commands gear shifts by turning the shift solenoid valves on and off. According to the input shaft speed, intermediate (counter) shaft speed, and output shaft speed, the ECM detects the actual gear (1st, 2nd, 3rd, 4th, 5th or 6th gear). When the gear commanded by the ECM and the actual gear are not the same, the ECM illuminates the MIL and stores the Diagnostic Trouble Code (DTC).
OBDII Code P2808 Toyota - Pressure Control Solenoid 'G' Performance - AutoCodes.com
P2808 Toyota Code - Pressure Control Solenoid 'G' Performance
What does this mean?

What are the Possible Causes of the DTC P2808 Toyota?

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty Pressure Control Solenoid 'G' valve (Shift Solenoid Valve SL4)
  • Pressure Control Solenoid 'G' valve harness is open or shorted
  • Pressure Control Solenoid 'G' valve circuit poor electrical connection
  • Transmission valve body assembly is blocked
  • Faulty Automatic transaxle assembly

How to Fix the DTC P2808 Toyota?

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 does this mean?

Code Tech Notes

When a transmission solenoid malfunction, 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, remove 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2808 Toyota 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.

Need more information about the P2808 Toyota code?

Need more information on how to fix the P2808 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Toyota Models

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 P2808 Toyota Code

1. What are the common symptoms of OBDII code P2808 in a Toyota related to Pressure Control Solenoid 'G' Performance?

The common symptoms include harsh shifting, transmission slipping, reduced fuel efficiency, and the transmission may go into "limp mode."

2. What are the possible causes of OBDII code P2808 in a Toyota?

Potential causes include a faulty pressure control solenoid 'G', low transmission fluid levels, dirty or contaminated transmission fluid, or an electrical issue in the transmission control system.

3. How can I diagnose the issue causing OBDII code P2808 in my Toyota?

Diagnosing the issue may involve conducting a visual inspection of the transmission fluid, checking for any leaks, testing the pressure control solenoid 'G' for proper functioning, and using a scan tool to monitor transmission data.

4. Can I continue driving my Toyota with OBDII code P2808 present?

It is not recommended to continue driving your vehicle with this code present, as it can lead to further damage to the transmission and potentially unsafe driving conditions.

5. How can I repair OBDII code P2808 in my Toyota?

Repairing this code may involve replacing the pressure control solenoid 'G', performing a transmission fluid flush and filter replacement, addressing any electrical issues in the transmission system, and clearing the code with a scan tool.

6. Is it possible to prevent OBDII code P2808 from occurring in my Toyota?

Regular maintenance of your vehicle's transmission, such as changing the transmission fluid and filter at recommended intervals, can help prevent issues that may trigger this code.

7. Can a DIY enthusiast fix OBDII code P2808 in a Toyota?

While some aspects of diagnosing and repairing this code may be within reach of a skilled DIY enthusiast, complex transmission repairs may require the expertise of a professional mechanic.

8. How much does it typically cost to repair OBDII code P2808 in a Toyota?

The cost of repairing this code can vary depending on the underlying issue, parts needed, labor costs, and whether the repairs are performed at a dealership or an independent repair shop.

9. Will resetting the OBDII code P2808 in my Toyota make it go away permanently?

Simply resetting the code without addressing the underlying issue will not fix the problem permanently. It is crucial to diagnose and repair the root cause of the code for a lasting solution.

10. Are there any recalls or technical service bulletins related to OBDII code P2808 in Toyota vehicles?

It is advisable to check with Toyota dealerships or online resources for any recalls or technical service bulletins related to this specific OBDII code to see if there are known issues or solutions provided by the manufacturer.

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