The P0C2A: Auxiliary Transmission Fluid Pump Motor Stalled fault code indicates that the auxiliary transmission fluid pump motor has stalled. This can be caused by a mechanical blockage, electrical or driver circuit issues, or faulty motor components. A stalled motor can lead to improper transmission fluid circulation, which could result in transmission cooling problems or damage.
P0C2A – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0C2A: Auxiliary Transmission Fluid Pump Motor Stalled |
| Is it serious? | Yes, a stalled motor can cause the pump to stop functioning, leading to overheating of the transmission. |
| Possible causes | – Motor stall due to mechanical blockage – Electrical or driver issues – Faulty motor components |
| How to diagnose? | – Check for mechanical blockages in the motor – Test the motor and driver components – Inspect electrical system and connections |
P0C2A Meaning
The P0C2A code indicates that the auxiliary transmission fluid pump motor is not operating as expected and has stalled. This could be caused by a mechanical blockage within the pump, faulty electrical connections, or issues with the motor’s driver circuit. A stalled motor will prevent the proper circulation of transmission fluid, which is essential for cooling and efficient operation of the transmission system.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for any additional related codes that might provide further insights into the motor stall or related system issues. | OBD-II Scanner |
| Inspect for Mechanical Blockages | Visually inspect the auxiliary transmission fluid pump and surrounding components for any signs of mechanical blockage or debris that could be preventing the motor from rotating. | Flashlight, Mechanic’s Tools |
| Test the Motor and Driver Components | Use a diagnostic tool to test the motor for proper function. Verify that the motor is receiving power from the driver circuit and that there are no internal failures in the motor or driver. | Diagnostic Tool, Multimeter |
| Inspect Electrical System and Connections | Visually inspect the wiring, connectors, and other components of the electrical system for any signs of damage, corrosion, or loose connections that could cause the motor to stall. Repair or replace as necessary. | Flashlight, Multimeter, Wiring Diagram |
| Check for Driver Circuit Issues | Test the driver circuit that powers the motor to ensure it is delivering the correct voltage and current. A malfunctioning driver circuit can cause motor stalling. | Multimeter, Diagnostic Tool |
| Clear the Code and Test Drive | After completing repairs, clear the code using an OBD-II scanner and perform a test drive to ensure the motor is working properly and the transmission fluid pump is functioning as expected. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | After the test drive, re-scan the system to confirm that the P0C2A code does not return. | OBD-II Scanner |
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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)