P22B4

Heated oxygen sensor (HO2S) 2, bank 1, negative current control – circuit high

DTC P22B4, sometimes indicated as P22B400 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing heated oxygen sensor (ho2s) 2, bank 1, negative current control – circuit high.

  • P22B4: Heated oxygen sensor (HO2S) 2, bank 1, negative current control – circuit high
  • P22B4 00: Heated oxygen sensor (HO2S) 2, bank 1, negative current control - circuit high

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