P2D38

Hybrid/EV Battery Pack Heater Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Reduced electric vehicle range
Long battery warm-up in cold weather
Dashboard warning
Reduced power in cold weather
Extended charging time

Causes

Battery heating element malfunction
Problems with the heater power circuit
Faulty battery temperature sensors
Error in the control unit software
Damage to the heating system wiring harness

How to Fix

Diagnosis of the heating element power circuit
Heater resistance check
Testing battery temperature sensors
Hybrid system control unit software update
Replacing the heating element if necessary

Related codes

P2D39 P2D3A P0A80