The P0C2C: Auxiliary Transmission Fluid Pump Control Module Feedback Signal Range/Performance fault code indicates that the feedback signal from the auxiliary transmission fluid pump control module is not performing within the expected range. This can result from issues with the feedback sensor, control module malfunctions, or wiring and connection problems. The feedback signal helps ensure proper operation of the pump, and any issues can lead to cooling inefficiencies.
P0C2C – Quick Overview
Code | Information |
---|---|
Meaning | P0C2C: Auxiliary Transmission Fluid Pump Control Module Feedback Signal Range/Performance |
Is it serious? | Yes, signal performance issues can prevent the pump from operating effectively, impacting transmission cooling. |
Possible causes | – Performance issues with feedback signal – Faulty sensor or control module – Wiring or connection problems |
How to diagnose? | – Verify the feedback signal performance – Test the sensor and control module – Inspect wiring and connections |
P0C2C Meaning
The P0C2C code means that the feedback signal from the auxiliary transmission fluid pump is either out of range or not performing as expected. The feedback signal allows the control module to monitor and adjust the pump’s operation. If the signal is not working properly, the pump may not function correctly, affecting the cooling of the transmission fluid and potentially leading to transmission issues.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to check for additional related codes, particularly those involving control module communication or sensor performance issues. | OBD-II Scanner |
Verify Feedback Signal Performance | Use a diagnostic tool or multimeter to measure the performance of the feedback signal. Compare the results to the manufacturer’s specifications to ensure the signal is within the expected range. | Multimeter, Diagnostic Tool |
Test the Feedback Sensor | Test the feedback sensor to ensure it is sending accurate data to the control module. Replace the sensor if it is faulty or providing incorrect readings. | Multimeter, Diagnostic Tool |
Inspect Wiring and Connections | Visually inspect the wiring and connections leading to the feedback sensor and control module for any signs of damage, corrosion, or poor connections. Repair or replace faulty components as needed. | Flashlight, Multimeter, Wiring Diagram |
Test the Control Module | If the sensor and wiring are functioning correctly, test the control module for internal faults that may be affecting feedback signal performance. | Diagnostic Tool, Vehicle Manual |
Clear the Code and Test Drive | After completing repairs, clear the fault code using an OBD-II scanner and perform a test drive to ensure the feedback signal is being transmitted and the pump is operating properly. | OBD-II Scanner, Vehicle Owner’s Manual |
Recheck for Codes | After the test drive, re-scan the system to confirm that the P0C2C code does not return. | OBD-II Scanner |

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