P0E16

Hybrid/EV Battery Pack Coolant Heater B Control Circuit/Open

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Reduced battery efficiency in cold weather
Extended charging time
Check Engine light comes on
Reduced electric vehicle range
Possible error messages on the display

Causes

Heater control circuit open
Heating element B fault
Relay or fuse problems
Short circuit in the circuit
Control module software errors

How to Fix

Check the integrity of the heater control circuit
Test the heating element for resistance
Check the condition of the relays and fuses
Scan the control module for additional errors
If necessary, replace the heating element

Related codes

P0E15 P0E17 P0E18