Code result
P2DA6
Coolant Heater A Over Temperature
Moderate severity
What it means
Coolant heater A reports temperature above the protection threshold. Coolant flow blocked or thermistor failed.
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
Coolant flow through heater blocked
highOne of the most commonly reported causes for this code — check this first.
Thermistor failed
mediumA plausible cause — test and verify before replacing parts.
Related help
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