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Home >> Infiniti >> 2021 >> QX50 Essential, FWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter, Warning Lamp & Indicator (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> DTC B22A0: HUD Control Unit >> DTC Description >> DTC Detection Logic

DTC Detection Logic

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B22A0

HUD control unit

[CIRCUIT CURRENT BELOW THRESHOLD]

18

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

--

Threshold

--

Diagnosis delay time

30 seconds or more

HUD control unit

[CIRCUIT CURRENT ABOVE THRESHOLD]

19

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

--

Threshold

--

Diagnosis delay time

30 seconds or more

HUD control unit

[CALIBRATION / PARAMETER MEMORY FAILURE]

46

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

--

Threshold

--

Diagnosis delay time

30 seconds or more

HUD control unit

[WATCHDOG / SAFETY μC FAILURE]

47

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

--

Threshold

--

Diagnosis delay time

30 seconds or more

HUD control unit

[INTERNAL ELECTRONIC FAILURE]

49

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

--

Threshold

--

Diagnosis delay time

30 seconds or more

HUD control unit

[DEACTIVATED]

53

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

--

Threshold

--

Diagnosis delay time

30 seconds or more