P07AD - OBD Trouble Code

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The transmission clutch is monitored for proper operation by the vehicles Hybrid Control Module. If this module detects that the clutch is not releasing as per the command of the driver, it will go ahead and set the error code P07AD. In similar situation, it may also place the vehicle in “limp mode” to limit the available engine/transmission performance and avoid prospective damage.

After proactively monitoring and adjusting other related sensors and systems the ECM will activate code P07AD. It does so to ensure proper self-diagnosis of the issues faced by the car. It is wise in such a scenario to diagnose the problem rather than driving as so that more issues don’t occur. This is one simple way to deal with the code, however there may more complex internal electrical malfunctions also present like open or shorted circuits or connectors or even water intrusion in some cases. Accordingly, you will need to get help with sorting out this issue. Professionals will know how to diagnose it. The letter “F” in the error refers to few different possible distinctions. You could be dealing with an issue with specific wire/circuit, or friction element within the transmission. Your vehicle manual will prove to be extremely helpful in such cases to locate the components and wiring. The ECM lods the P07AD error when it detects a slip in the internal “F” friction element present inside the transmission as stuck off/ not engaging/ not gripping or facing performance problems.

What causes this problem with the Transmission Friction Element “F” Stuck ON?

• Low level of transmission oil
• Worn Out internal friction element
• Contaminated ATF
• Wiring problem (e.g. open, short, chafe, heat damage)
• Uneven sizes of tires
• Problems causing uneven rotational speed/circumference (like low tire pressures, brake stuck on etc.)
• TCM (Transmission Control Module) malfunction
• ECM (Engine Controls Module) malfunction
• Water damage caused to module and/or harness

1. Powertrain Control Module - Repair the PCM and see if it is working fine. If that’s not the case you will have to replace it. Go for the best quality branded parts from Parts Avatar, you can order online from the comfort of your home and have your order shipped right to your doorstep.
2. Engine Control Module - Fix the issues with the ECM module, opt for replacement if that’s not helping. You can find the ECM compatible with your vehicle on Parts Avatar, we stock a wide range or brands and vehicle compatible auto parts. There’s also free shipping over order CAD $99
3. Automatic Transmission Module - In error P07AD at times replacement of the transmission is the only way to resolve the problem. You can simply order online and have it delivered within few days. Don’t worry about where you’re located, we ship across Canada!
4. Transmission Control Module - Repair or replace as needed. You can find the best quality auto parts on our website. Ordering is simple and hassle free.
5. Body Control Module - If you need a replacement of the body control module, you don’t need to stress. Have it delivered right to your doorstep, order 24x7 with Parts Avatar and track your shipment through every step of the way!

If you want to know more about the OBD error code P07AD symptoms, you’re at the right place. We have listed out the common symptoms connected with Transmission Friction Element “F” Stuck ON.

Common Symptoms

• Uneven handling
• The transmission is noticeably slipping
• Unpredictable shifting
• Atypical patterns of shifting
• Shift selection is harsh
• ATF (Automatic Transmission Fluid) leaking
• Poor torque
• Faulty power output

Here are some simple ways by which you can correct the P07AD code

• Repair or replace transmission fluid
• Fill transmission fluid to optimum level
• Repair or replace ECM
• Repair or replace Body control module or its components as needed

Parts Avatar is always at your service. You can find a large variety of car parts on our website and order anytime from the comfort of your home. Take a look at the superior quality and branded variety of PCM, ECM, Body Control Module, Engine Control Module and many more.

Follow these simple diagnostic steps to rectify the error P07AD. Start by the basics and research your vehicles Technical Service Bulletins and check steps for correcting correlating the symptoms your vehicle is exhibiting. Take care in matching your vehicle correctly, by model, year of make and engine specifications. The TSB will prove to be super helpful when you are going to do advanced diagnostics. You will also require certain tools for the diagnosis.

Here we have noted three simple steps for diagnosing this OBD error.

Step 1 - Do the basic maintenance and for this you will need to start with inspecting the transmission fluid. The Automatic Transmission Fluid or ATF has to be clean and free from contaminants such as debris, it should also be at the right level for the transmission to function smoothly. In general, you should be punctual with your maintenance schedule of your vehicle, this will ensure you don’t have error popping up frequently. Vehicle upkeep is very important. Transmission service includes checking the filter, fluid and the gasket, if you don’t know when the last one was done, it is best to do one now before proceeding with diagnosis.

Step 2 - When looking for the connector or harness for the transmission system you will come across a junction connector, to verify what it is refer your vehicles manual. You may also find, one “master” connector, so it is very important that you are sure of which connector you are working with. Now check if the connector is seated properly, it shouldn’t be loose. Also, check if there’s proper electrical connection present. Where the connector connects the A/T it is subjected to vibrations, these may have caused the connector to loosen up or physically damage them too. The ATF can also saturate the connectors and wires, which can cause issues that your vehicle is facing currently, or may be cause of concern in the future.

Step 3 - In any vehicle the systems all work together in sync to function, so if one system is not functioning properly it is more likely going to negatively affect few others. Hence, as the owner of the vehicle it is important to be aware of the overall condition of the vehicle at all times. In the case of this OBD error, you will have to check to see if any of these is present; uneven tires, worn out suspension parts, incorrect wheels, as they all can cause issues. If you do spot a problem, sort it out as soon as possible.

Common mistakes when diagnosing the P07AD code

• Internal transmission malfunction
• Low transmission fluid level
• Transmission valve body solenoid malfunction