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Home >> Infiniti >> 2021 >> QX50 Essential, 4WD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (2 Of 5) >> DTC/Circuit Diagnosis >> DTC P0237, P0238: TC Boost Sensor >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0237

00

TC BOOST SEN/CIRC-B1

(Turbocharger/Supercharger Boost Sensor A Circuit Low)

Diagnosis condition

--

Signal (terminal)

--

Threshold

An excessively low voltage from the turbocharger boost sensor is sent to ECM.

Diagnosis delay time

5 consecutive seconds

P0238

00

TC BOOST SEN/CIRC-B1

(Turbocharger/Supercharger Boost Sensor A Circuit High)

Diagnosis condition

--

Signal (terminal)

--

Threshold

An excessively high voltage from the turbocharger boost sensor is sent to ECM.

Diagnosis delay time

5 consecutive seconds