P07AF OBD Error Code: Problem & Solutions

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The transmission clutch is monitored by the hybrid control module, if the control module is able to detect issues with the clutch it will set the OBD code P07AF. The clutch is expected to release upon the command of the driver and this malfunction is picked up by the ECM. The hybrid control module in such a case may also put the vehicle on “limp mode” obstructing engine/transmission performance to prevent additional damages.

After proactively monitoring and adjusting systems as well sensors and other systems to ensure proper self-diagnosis the ECM proceeds to activating the P07AF OBD code. You will have to hence limit the amount of driving of the vehicle to ensure that the issue doesn’t worsen. There could be some simple issues related to this code or some severe electrical malfunctions too. The letter “G” may refer to varied potential distinctions in terms of where the problem is. It could be in a particular circuit/wire or you may be dealing with a specific friction element within the transmission. When the ECM module detects a slip in the internal “G” friction element within the transmission as stuck off, or not engaging or not gripping or even if the performance has a problem, it will log P07AF code.

What causes this problem with the Transmission Friction Element "G" Stuck ON?

• Low level transmission oil
• Worn internal friction element
• Impure ATF Causes
• Wiring issue
• Uneven sized tires
• Issue causing uneven rotational speed/circumference.
• Transmission Control Module has failed
• Engine Controls Module has failed
• Water damage caused to the module and/or harness

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Confused by the symptoms your vehicle is exhibiting? Well, we have drafted a simple list of common symptoms for you to check if they are associated with Transmission Friction Element "G" Stuck ON

Common Symptoms

• Uneven handling
• Transmission is slipping
• Haphazard shifting
• Odd shift patterns
• Rough shift selection
• Automatic Transmission Fluid leak
• Low torque noticed
• Atypical power output

Take a look at some easy ways to correct the P07AF Code:

• Check and replace Transmission fluid to the required amount
• Clean the transmission fluid tank and remove oil if contaminants are present in the oil
• Repair or replace Body control Module
• Repair or replace ECM module
• Repair or replace Transmission Control Module

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Follow these basic steps to diagnose P07AF error but before that research your vehicles Technical Service Bulletins and correlate them to the particular issue your vehicle is facing. Also make sure you match your vehicle model, make year and engine correctly.

Step 1 - Basic maintenance is required, so check the ATF fuel and see if it needs to be cleaned or refilled. Contaminants like debris or any other pollutants can be very bad for the Transmission system. Fix that issue accordingly. It is important that proper maintenance schedules are followed to avoid more faults like this in the future. These transmission services include filter, fluid and gasket checks, if you don’t remember the last servicing of the transmission, it’s better to do one now.

Step 2 - While trying to locate the connector or harnesses for this system, you may come across a junction connector and a “master” connector. Refer your manual to know which one you have found. The connector itself has to be seated properly and should have good electrical connection. The point where the connection is located on the automatic transmission, there may be vibrations that will loosen it or cause physical damage. So, make sure none of those are present. There is also a slight possibility of ATF to saturate connectors and wires which can cause issues in the future if not present.

Step 3 - As a vehicle owner it is crucial that you are well aware of the overall condition of your vehicle. Systems directly affect other systems because they all work together for the vehicle to function. Some malfunctions can cause issues like; uneven tires, worn out suspension parts, incorrect wheels etc. So sort of these out and you may be able to get rid of this code.

Common mistakes when diagnosing the P07AF code

• Failure of Internal transmission failure
• Low level of Transmission fluid
• Failure of Transmission valve body solenoid