What Does P0C44 Mean?
The hybrid battery pack coolant temperature sensor is reporting abnormally low temperature readings, below minimum threshold. This indicates a short circuit condition or sensor failure.
Common Causes
40%
Shorted sensor or signal wire to ground
35%
Failed temperature sensor with internal short
20%
Damaged wiring harness with short to chassis
5%
Water or coolant intrusion in connector
Diagnostic Steps
1
Step 1: Check sensor signal voltage at control module connector; low voltage indicates short to ground
2
Step 2: Disconnect sensor and measure resistance at sensor connector; compare to temperature chart
3
Step 3: With sensor disconnected, check signal wire for short to ground (should read infinite resistance)
4
Step 4: Inspect sensor and wiring for damage, coolant leaks, or connector contamination
5
Step 5: Replace sensor if internal short is confirmed through testing
Estimated Repair Cost
$200 - $650
Parts + labor, varies by vehicle and location
The hybrid battery pack coolant temperature sensor is reporting abnormally low temperature readings, below minimum threshold. This indicates a short circuit condition or sensor failure.
The most common cause of P0C44 (Hybrid Battery Pack Coolant Temperature Sensor Circuit Low) is: Shorted sensor or signal wire to ground
Typical repair costs for P0C44 range from $200 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
False low readings may prevent proper overheating protection for battery pack. Battery damage possible if condition continues uncorrected.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0C44 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Hybrid Battery Thermal Management
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
