AutoCodes – Lexus – P2808 Lexus

P2808 Lexus 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 Lexus 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 916

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 Sep 12, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P2808 Lexus 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 Lexus - Pressure Control Solenoid 'G' Performance - AutoCodes.com — P2808 Lexus Code - Pressure Control Solenoid 'G' Performance

What does this mean?

What are the Possible Causes of the DTC P2808 Lexus?

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 Lexus?

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 Lexus 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 P2808 Lexus Code

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

- Common symptoms include harsh shifting, transmission slippage, decreased fuel efficiency, and the transmission going into limp mode.

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

- The code P2808 can be triggered by issues such as a faulty pressure control solenoid 'G', low transmission fluid levels, a clogged transmission filter, or electrical problems in the transmission system.

3. How can I diagnose the Pressure Control Solenoid 'G' Performance issue in my Lexus?

- Diagnosing the issue involves using a scan tool to retrieve the OBDII code P2808, checking the transmission fluid level and condition, inspecting the wiring and connectors related to the pressure control solenoid 'G', and performing a transmission pressure test.

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

- It is not recommended to continue driving your Lexus with the code P2808 present, as it can lead to further damage to the transmission and potentially leave you stranded on the road.

5. How can I repair OBDII code P2808 related to the Pressure Control Solenoid 'G' Performance issue in my Lexus?

- Repairing the issue may involve replacing the pressure control solenoid 'G', addressing any underlying transmission fluid or filter issues, repairing or replacing damaged wiring or connectors, and clearing the trouble codes.

6. Is it possible to reset the OBDII code P2808 in a Lexus without addressing the underlying issue?

- While clearing the code temporarily may be possible, it is not recommended as the underlying problem causing the code will persist and could lead to more severe transmission issues in the future.

7. How much does it typically cost to repair OBDII code P2808 in a Lexus?

- The cost of repairing OBDII code P2808 can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Can a DIY enthusiast fix OBDII code P2808 in a Lexus?

- While some experienced DIY enthusiasts may be able to address simpler causes of the code, diagnosing and repairing the Pressure Control Solenoid 'G' Performance issue often requires specialized tools and expertise, making it a job best left to professional mechanics.

9. Are there any preventive maintenance steps to avoid OBDII code P2808 in a Lexus?

- Regularly checking and maintaining proper transmission fluid levels, replacing the transmission fluid and filter at recommended intervals, and addressing any transmission issues promptly can help prevent the occurrence of code P2808.

10. How long does it typically take to repair OBDII code P2808 in a Lexus?

- The repair time for OBDII code P2808 can vary based on the specific cause of the issue and the availability of parts, but it may take anywhere from a few hours to a full day for a mechanic to diagnose and fix the problem.