P0E15

Hybrid/EV Battery Pack Coolant Heater A Control Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–222 (est.)

Symptoms

Hybrid system power reduction
Increased fuel consumption (for hybrids)
Malfunction warning on the dashboard
Reduced battery performance in cold weather
Activation of emergency operation

Causes

Heating element malfunction
Problems with wiring or connectors
Heater controller failure
Low coolant level
Malfunction of temperature sensors

How to Fix

Check the level and condition of the coolant
Diagnose the heating element for malfunctions
Check the integrity of the wiring and connectors
Scan for additional trouble codes
Check the operation of temperature sensors
Repair only from an authorized dealer

Related codes

P0E16 P0E14 P0A80