P0C70

Hybrid/EV Battery Temperature Sensor C/D Correlation

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Reducing the range of an electric vehicle
Incorrect battery temperature readings
The system may limit power

Causes

Temperature sensor C or D fault
Problems with wiring to sensors
Poor contact in sensor connectors
Problems with the battery management module
Corroded or damaged electrical connections

How to Fix

Check temperature sensor readings using a diagnostic scanner
Inspect the wiring and sensor connectors for damage
Check the resistance of temperature sensors
If necessary, replace the faulty temperature sensor
Clean contacts and eliminate corrosion

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