P01B4 Code Definition
P01B4 Alternative Fuel Rail Temperature Sensor Circuit
What Does the Engine Code P01B4 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 "B4" is DTC number. OBD2 Diagnostic Trouble Code P01B4 means that Alternative Fuel Rail Temperature Sensor Circuit has been detected.
Carly Universal Scanner
How Serious Is the Code P01B4?
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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