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Home >> Infiniti >> 2023 >> QX55 Essential >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (2 Of 5) >> DTC/Circuit Diagnosis >> DTC P0234: TC System >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

NOTE: If DTC P0234 is displayed with DTC P0237 or P0238, first perform the trouble diagnosis for DTC P0237 or P0238. Refer to DTC Description .

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0234

00

TC SYSTEM-B1

(Turbocharger/Supercharger A Overboost Condition)

Diagnosis condition

--

Signal (terminal)

--

Threshold

Turbocharger boost is higher than the target value.

Diagnosis delay time

5 consecutive seconds