OBD Guide

P0E16

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

P0E16 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Pack Coolant Heater B Control Circuit/Open. Common causes: heater control circuit open, heating element b fault. Estimated repair cost: $56–167.

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

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

Related codes

Error P0E16 by Vehicle Brand

FAQ

What does the P0E16 code mean?

P0E16 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Pack Coolant Heater B Control Circuit/Open

What causes a P0E16 error code?

The most common causes of P0E16 include: Heater control circuit open; Heating element B fault; Relay or fuse problems; Short circuit in the circuit.

How do I fix a P0E16 diagnostic trouble code?

To fix P0E16: Check the integrity of the heater control circuit. Test the heating element for resistance. Check the condition of the relays and fuses. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0E16?

Yes, but get it checked soon

How much does it cost to fix P0E16?

The estimated repair cost for P0E16 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat