What does P07A3 Transmission Friction Element A Stuck On mean?
The P07A3 OBD-II trouble code refers to the transmission friction element A being stuck on.
This code is commonly found in vehicles with automatic transmissions.
The friction elements in the transmission play a crucial role in the shifting and operation of the transmission.
When element A is stuck on, it can cause irregular shifting, decreased torque output, and other issues.
Possible causes for this code include low automatic transmission fluid (ATF), worn friction elements, dirty ATF, wiring issues, uneven tire sizes, and module or harness damage.
It is important to address this issue promptly as it can affect the overall performance of the vehicle.
Always refer to the vehicle's service manual for specific repair information.
P07A3 Symptoms
- Uneven handling
- Transmission slipping
- Erratic shifting
- Abnormal shift patterns
- Harsh shift selection
- ATF (Automatic Transmission Fluid) leak
- Low torque
- Abnormal power output
Possible P07A3 Causes
- Low ATF
- Worn friction element (internal)
- Dirty ATF
- Wiring issue (e.g. open, short, chafe, heat damage)
- Uneven tire sizes
- Issue causing uneven rotational speed/circumference (e.g. low tire pressures, brake stuck on, etc.)
- TCM (Transmission Control Module) issue
- ECM (Engine Controls Module) issue
- Water damage to module and/or harness
Troubleshooting P07A3 error code
- Perform basic maintenance procedures, start with checking the transmission fluid cleanliness and perform a transmission service if needed
- Check for any loose or damaged connectors and ensure a good electrical connection
- Inspect overall vehicle condition, including tires, suspension parts, and wheels, and correct any unevenness
- Refer to Technical Service Bulletins for known issues specific to your vehicle
- Perform advanced diagnostic steps using appropriate equipment and knowledge as per vehicle specific repair guide