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Home >> Infiniti >> 2020 >> QX50 Autograph, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (11 Of 12) >> DTC/Circuit Diagnosis >> DTC P2578: TC/SC Speed Sensor A >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P2578

00

Turbocharger/Supercharger speed sensor A

(Turbocharger/Supercharger speed sensor "A" circuit)

Diagnosis condition

  • Engine speed: More than 1, 600 rpm
  • Boost pressure is applied enough

Signal (terminal)

Turbocharger speed sensor signal

Threshold

Sensor signal is not inputted

Diagnosis delay time

2 seconds