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Home >> Lexus >> 2023 >> NX 250 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 123 (Engine Control System - Diagnostic Codes (P22AB-U115C) & Circuit Tests (1 Of 2)) >> SFI System >> DTC P2C90-00: Crankcase Ventilation System - Hose "A" Disconnected [11/2021 - 03/2023] >> Description

DTC P2C90-00: Crankcase Ventilation System - Hose "A" Disconnected [11/2021 - 03/2023]: Description

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When blowby gas is introduced from the crankcase to the intake system, fresh air is introduced to maintain pressure inside the crankcase.

In order to prevent leaks from the fresh air hose during boosting, the intake air flow and PCV pressure are monitored to detect hose detachment or damage.

GTY1041412Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
*1 Air Cleaner *2 Compressor
*3 Intercooler *4 Throttle Valve
*5 PCV Valve *6 Vacuum Sensor Assembly
*a Blowby Gas *b Fresh Air
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
P2C90-00 Crankcase Ventilation System - Hose "A" Disconnected The change in PCV pressure is less than the threshold value when the change in intake air flow for each bank is at or above the specified value (2 tripdetection logic).
  • PCV hose (air inlet duct - cylinder head cover)
  • Air hose (vacuum sensor assembly - cylinder head cover)
  • Air inlet duct (bank 1)
  • Cylinder head cover (bank 1)
Comes on SAE Code: P2C90