P01E8

Engine Coolant Heater A Control Circuit/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Poor engine performance in cold weather
Extended engine warm-up time
Check Engine Light Illuminates

Causes

Broken or damaged wiring
Faulty heater relay
Malfunction of the coolant heater itself
Problems with the engine control unit

How to Fix

Check the integrity of wiring and connectors
Check heater relay
Check heater resistance
If necessary, replace faulty components

Related codes

P01E9 P0128 P0115