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Home >> Infiniti >> 2021 >> Q50 Pure, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTCS) (6 Of 6) >> Engine (ECM) >> P2578 TC/SC Speed Sensor A >> DTC Description >> VR30DDTT engine >> DTC Detection Logic
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DTC Detection Logic

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P2578

Turbocharger/Supercharger speed sensor A

(Turbocharger/Supercharger speed sensor "A" circuit)

Sensor signal is not inputted for 2 consecutive seconds while the following condition is satisfied:

  • Engine speed: more than 1, 400 RPM
  • Boost pressure is applied enough.
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