Auxiliary Transmission Fluid Pump Control Module Feedback Signal High
The P0C2E code indicates that the Auxiliary Transmission Fluid Pump (ATFP) control module has detected a feedback signal voltage higher than the expected range. This pump is typically used in hybrid or electric vehicles to circulate transmission fluid when the engine is off, ensuring proper lubrication and cooling. A high signal suggests a short to voltage, faulty module, or wiring issue, which can lead to transmission overheating or damage.
01. Most Common Causes
- Short to voltage in the feedback signal circuit
- Faulty auxiliary transmission fluid pump control module
- Damaged wiring or connector at the pump module
- Internal pump failure causing abnormal feedback
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Transmission overheating or slipping
- Reduced fuel economy in hybrid mode
- Vehicle may enter limp mode
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Visually inspect the ATFP module wiring and connectors for damage or corrosion.
Step 3: Use a multimeter to check the feedback signal voltage at the module connector; compare to manufacturer specs.
Step 4: If voltage is high, isolate the circuit to identify a short to voltage or replace the module.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the auxiliary pump may fail, leading to transmission damage. Limit driving to short trips until repaired.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150. Repair costs vary: wiring repair $100-$300, module replacement $200-$600, plus labor.