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Home >> Infiniti >> 2019 >> QX50 Essential, FWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (2 Of 12) >> DTC/Circuit Diagnosis >> DTC P00B3, P00B4: Engine Coolant Temperature Sensor 2 >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P00B3

00

RADIATOR COOLANT TEMP SEN

(Radiator coolant temperature sensor circuit low)

Diagnosis condition

--

Signal (terminal)

--

Threshold

ECM detects the following status continuously for 5 seconds or more:

A voltage signal transmitted from the engine coolant temperature sensor 2 is 0.04 V or less.

Diagnosis delay time

5 consecutive seconds

P00B4

00

RADIATOR COOLANT TEMP SEN

(Radiator coolant temperature sensor circuit high)

Diagnosis condition

--

Signal (terminal)

--

Threshold

ECM detects the following status continuously for 5 seconds or more:

A voltage signal transmitted from the engine coolant temperature sensor 2 is 4.84 V or more.

Diagnosis delay time

5 consecutive seconds