Engine-Codes.com
Engine-Codes – Generic – P099A

P099A Code - Shift Solenoid 'G' Control Circuit Range/Performance

Quick Answer

The P099A diagnostic trouble code (DTC) refers to a Shift Solenoid 'G' Control Circuit Range/Performance issue. Common causes include Faulty shift solenoid 'G', Damaged wiring or connectors in the control circuit, Low transmission fluid levels. 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
P099A indicates Shift Solenoid 'G' Control Circuit Range/Performance.
Common causes
Common causes include Faulty shift solenoid 'G', Damaged wiring or connectors in the control circuit, Low transmission fluid levels.
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 26, 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 P099A Description

The P099A diagnostic trouble code (DTC) refers to a Shift Solenoid 'G' Control Circuit Range/Performance issue. This code indicates that there is a problem with the control circuit of the shift solenoid 'G' in the transmission. The shift solenoid 'G' is responsible for controlling the flow of transmission fluid to engage the gears in the transmission. When this solenoid malfunctions, it can lead to erratic shifting behavior, transmission slipping, or even the inability to shift gears at all.

OBDII Code P099A - Shift Solenoid 'G' Control Circuit Range/Performance
P099A Code - Shift Solenoid 'G' Control Circuit Range/Performance

Common Causes of P099A

  1. Faulty shift solenoid 'G'
  2. Damaged wiring or connectors in the control circuit
  3. Low transmission fluid levels
  4. Malfunctioning transmission control module

Symptoms of P099A

  1. Harsh or delayed shifting
  2. Transmission slipping
  3. Inability to shift gears
  4. Check engine light illuminated
  5. Decreased fuel efficiency

How to Fix P099A

  1. Begin by using a scan tool to retrieve the specific trouble code and diagnose the issue accurately.
  2. Inspect the wiring and connectors in the shift solenoid 'G' control circuit for any damage or corrosion. Repair or replace as necessary.
  3. Check the transmission fluid level and quality. Top off or replace the fluid if needed.
  4. Test the shift solenoid 'G' for proper operation. Replace if found to be faulty.
  5. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P099A

The cost of repairing a Shift Solenoid 'G' Control Circuit Range/Performance issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay between $200 and $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to get a few quotes from different shops to ensure you're getting a fair price.

Need more information about the P099A code?

Need more information on how to fix the P099A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P099A 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 P099A Code

No Frequently Asked Questions about P099A Code found.

Discuss the causes and fixes for P099A OBDII Code

Submit a New Comment

Code P099A comments

No comments found for this page.