P2D46

Hybrid/EV Battery Pack B Over Temperature

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–889 (est.)

Symptoms

Reduced power or range
Warning messages on the dashboard
Limitation of hybrid system operation
Automatic shutdown of traction battery
Unusual odors from the battery area

Causes

Battery cooling system malfunction
Clogged ventilation ducts
Faulty temperature sensors
Damaged battery cells
Excessive load on the battery

How to Fix

Check the operation of the battery cooling system
Diagnose temperature sensors
Check ventilation ducts for blockages
Test individual battery cells
Update battery management system software

Related codes

P2D45 P2D47 P0AA6