P01EA

Engine Coolant Heater A Control Circuit High

Moderate severity

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.

Common causes

Wiring shorted to battery
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $90-660
Connector pins corroded - high contact resistance
Less common, but worth ruling out after the more likely causes.
low
Typical part cost: $90-660
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First things to check

1Confirm the code with a scan tool and check for additional related codes.
2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.

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Related codes

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Frequently asked questions

What does P01EA mean?

P01EA means "Engine Coolant Heater A Control Circuit High". It is a generic OBD-II code that points to a fault in the fuel & air metering.

What are the most common causes of P01EA?

wiring shorted to battery; connector pins corroded - high contact resistance; supply wire pinched against b+ source — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.

Can I keep driving with this code?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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