P01EF Code Definition
P01EF Engine Coolant Heater 'B' Control Circuit Performance
What Does the Engine Code P01EF Mean?
Character "P" in the first position of Diagnostic Trouble Code (DTC) represents the powertrain system (engine and transmission), "0" in the second position means that this is a generic OBD-II (OBD2) DTC. "1" in the third character position in a DTC indicates that the fuel and air metering and auxiliary emission controls is experiencing a malfunction. The last two characters "EF" is DTC number. OBD2 Diagnostic Trouble Code P01EF means that Engine Coolant Heater 'B' Control Circuit Performance has been detected.
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How Serious Is the Code P01EF?
For now, this issue is not serious. Carly recommends you to check this issue on a regular basis and check if it gets worse later on.
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