Code result
P01EA
Engine Coolant Heater A Control Circuit High
Moderate severity
What it means
Engine Coolant Heater A Control Circuit High: the control-circuit voltage is above the expected range. Often an open circuit or a short to supply voltage.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Wiring shorted to battery
highOne of the most commonly reported causes for this code — check this first.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Supply wire pinched against B+ source
lowLess common, but worth ruling out after the more likely causes.
Related help
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