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Home >> Infiniti >> 2021 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control System (DTCS) >> Laser/Radar (Distance Sensor) >> DTC C1A21-4B: Unit High Temp >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC

CONSULT screen terms

DTC detection condition

(Trouble diagnosis content)

[Malfunction type]

C1A21

4B

UNIT HIGH TEMP

(Unit high temperature)

[OVER TEMPERATURE]

[Over temperature]

Diagnosis condition

  • When engine is running
  • When FEB system is ON

Signal (terminal)

--

Threshold

Temperature detected by the temperature sensor integrated in distance sensor remains more than 105 deg.C (221 deg.F) for 5 seconds or more

Diagnosis delay time

5 seconds or more