What does code P2DA6 mean?

Q: What does code P2DA6 mean?

Coolant Heater A Over Temperature. P2DA6 indicates that the engine control module has detected an over-temperature condition in the coolant heater circuit, typically a grid heater or block heater used to warm the engine or passenger compartment. The computer sets this code when the heater's temperature sensor reports a value above the safe threshold, often due to a stuck-on heater, a faulty sensor, or a wiring short.

DTC codes / P2Dxx · Hybrid propulsion / P2DA6

P2DA6Coolant Heater A Over Temperature

P2DA6 indicates that the engine control module has detected an over-temperature condition in the coolant heater circuit, typically a grid heater or block heater used to warm the engine or passenger compartment. The computer sets this code when the heater's temperature sensor reports a value above the safe threshold, often due to a stuck-on heater, a faulty sensor, or a wiring short.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.