Auxiliary Transmission Fluid Pump Control Module Internal Temperature Sensor Circuit
The P0C1C code indicates a malfunction in the internal temperature sensor circuit of the auxiliary transmission fluid pump control module. This sensor monitors the temperature of the pump module to prevent overheating. A fault in this circuit can lead to inaccurate temperature readings, causing the pump to operate incorrectly or shut down, potentially leading to transmission overheating or reduced performance.
01. Most Common Causes
- Faulty internal temperature sensor
- Damaged wiring or connector in the sensor circuit
- Failed auxiliary transmission fluid pump control module
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Transmission overheating or slipping
- Reduced fuel economy
- Transmission warning message on dashboard
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Visually inspect the auxiliary pump module and its wiring for damage or corrosion.
Step 3: Test the temperature sensor circuit using a multimeter for proper resistance and voltage.
Step 4: If sensor and wiring are okay, replace the auxiliary transmission fluid pump control module.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with this code can lead to transmission overheating and potential damage. Have the vehicle inspected as soon as possible.
How much does it cost to fix?▼
The cost typically ranges from $200 to $600, including parts and labor, depending on whether the sensor or the entire control module needs replacement.