What is OBD-II Code P07A0 – Transmission Friction Element G Slip Detected

What is OBD-II Code P07A0 – Transmission Friction Element G Slip Detected

When you see the OBD-II code P07A0 on your dash, it means a problem has occurred in the transmission. This specific code applies to a “Transmission Friction Element G Slip Detected.” If you are not an experienced mechanic, this code can be very confusing. In this article, we will explain what this code means and how to repair the issue.

Symptoms of OBD-II Code P07A0

When your car triggers the P07A0 code, you may notice several symptoms. These symptoms may include issues such as:

– Vibrations in your car.
– A decrease in fuel economy.
– Your car may fail a state emission test.
– Poor overall performance.

If you experience any of these issues, you should immediately take your car to a qualified mechanic to be checked. Ignoring the issue could lead to more severe problems in the transmission, ultimately costing you more in repairs.

Causes of OBD-II Code P07A0

There can be several reasons why OBD-II code P07A0 occurred. The most common cause is the damage to the friction element G. This element is located inside the automatic transmission and is responsible for transferring power to the gears when you shift the transmission. This element is designed to grip onto the gear, allowing for the transfer of power. When it malfunctions, the gear slips and causes the engine to overheat.

Another common cause of the P07A0 code is the malfunction of the transmission control module. The TCM is responsible for controlling the transmission’s shifting action. When the TCM is wrong, the gear’s change may not occur correctly, leading to slippage. In addition, the malfunction of the TCM can cause the transmission to stuck in one gear or refuse to shift at all.

A third cause of P07A0 may be low transmission fluid. When the fluid is low, the transmission struggles to transfer power from the engine to the gears. The transmission may not be able to maintain the correct pressure, causing the transmission slipping.

How to Repair OBD-II Code P07A0

To repair the P07A0 code, you should take your car to an experienced mechanic. Your mechanic will start by scanning and diagnosing the car’s computer. They will look for the exact issue that caused the P07A0 code to appear on your dash. Once they have identified the issue, they will take the necessary measures to fix it.

If the P07A0 code occurred due to the damage of the friction element G, your mechanic would replace the element with a new one. This process involves removing the transmission from your car, replacing the element, and reinstalling the assembly.

If the malfunction of the TCM is causing the P07A0 code, your mechanic will repair or replace the TCM. The new TCM will be programmed to correctly control the transmission’s shifting action.

If the P07A0 code occurred due to low transmission fluid level, applying new fluid will solve the issue. There is a fill hole on top of the transmission case that will have to be opened to apply the fluid.

After repairing the primary issue, your mechanic will clear the OBD-II code from your car’s computer. They may also perform a road test to confirm that the issue is completely resolved.


1. How much does it cost to repair OBD-II code P07A0?
The cost of repairing code P07A0 varies depending on the type of repair your car needs. Replacing the friction element G may cost around $500-$1500, repair or replacement of the TCM may cost $500-$1500, and applying new transmission fluid will cost about $100-$200.

2. Can I continue to drive my car even if it triggers P07A0?
You should not continue to drive your car after seeing code P07A0. The issue can cause severe damage to your transmission, and ignoring the code could cost you more money in repairs.

3. Can I fix P07A0 myself?
Repairing P07A0 is a complicated process that requires a professional’s expertise. Attempting to repair the code by yourself can lead to more significant problems in your car.

4. How often should I have my transmission fluid changed?
The regular maintenance schedule for the transmission fluid replacement is every 30,000 to 60,000 miles, depending on driving conditions, vehicle age, and other factors. To avoid similar problems, punctually maintaining your car can be helpful.

5. What are the other symptoms that my car may show if it’s suffering a problem in the transmission?
Apart from the vibration in your car, decrease in fuel economy, and failing state emission test, you may experience a delay or difficulty in shifting gears, burning odor, whining noise, or visible fluid leakage. If you notice any of these symptoms, you should have your car inspected by a qualified mechanic.


OBD-II code P07A0 is usually associated with a problem in the transmission’s friction element G. Once the P07A0 code appears, it is essential to take your car to a qualified mechanic to have it diagnosed and fixed. Replacing the friction element G, repairing or replacing the TCM, or applying new transmission fluid can usually solve the issue. Ignoring the code could lead to a severe transmission problem that could cost more money to repair.

Scroll to Top