DTC P2C90-00: Crankcase Ventilation System - Hose "A" Disconnected [09/2023 - ]: Procedure

1. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   P2C90-00 and other DTCs are output	A
   P2C90-00 is output	B

   NOTE:

   If the Freeze Frame Data "Initial Engine Coolant Temperature" is 0°C (0°F) or less, the hose may be temporarily clogged due to freezing

   HINT: 

   If any DTCs other than P2C90-00 are output, troubleshoot those DTCs first.

Result: 

A 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2023 - ] 

Result: 

B 

See step  2

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1. Check the PCV hose connections.

   OK

   PCV hose is connected correctly.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

SECURELY RECONNECTION PCV HOSE 

Result: 

OK 

See step  3

1. Check the PCV hose clogged and damaged.

   OK

   PCV hose is not clogged and damaged.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CLEAN OR REPLACE PCV HOSE 

Result: 

OK 

See step  4

1. Check the PCV hose clogged and damaged.

   OK

   PCV hose is not clogged and damaged.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CLEAN OR REPLACE PCV HOSE 

Result: 

OK 

See step  5

1. Inspect the air inlet duct.

   OK

   PCV fresh air port of the air inlet duct is not clogged and damaged.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CLEAN OR REPLACE AIR INLET DUCT 

Result: 

OK 

See step  6

1. Inspect the cylinder head cover.

   OK

   PCV fresh air port and vacuum sensor assembly port of the cylinder head cover is not clogged and damaged.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CLEAN OR REPLACE CYLINDER HEAD COVER 

Result: 

OK 

See step  7

Refer to ON-VEHICLE INSPECTION [09/2023 - ]

Result

Result: 

NG 

See step  10

Result: 

OK 

See step  8

Refer to ON-VEHICLE INSPECTION [09/2023 - ]

Result

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [09/2023 - ] 

Result: 

NG 

See step  9

Pre-procedure1

• Disconnect the mass air flow meter sub-assembly connector.
• Disconnect the ECM connector.

• Measure the resistance according to the value(s) in the table below.

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  C13-3 (VCC) - C26-73 (VCVG)	Always	Below 1 Ω	Ω
  C13-1 (FG) - C26-75 (VG)	Always	Below 1 Ω	Ω
  C13-2 (E2G) - C26-74 (E2G)	Always	Below 1 Ω	Ω
  C13-3 (VCC) or C26-73 (VCVG) - Body ground and other terminals	Always	10 kΩ or higher	kΩ
  C13-1 (FG) or C26-75 (VG) - Body ground and other terminals	Always	10 kΩ or higher	kΩ
  C13-2 (E2G) or C26-74 (E2G) - Body ground and other terminals	Always	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to  REMOVAL [09/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Pre-procedure1

• Disconnect the vacuum sensor assembly connector.
• Disconnect the ECM connector.

• Measure the resistance according to the value(s) in the table below.

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  C12-3 (VC) - C26-86 (V1PC)	Always	Below 1 Ω	Ω
  C12-2 (PPC1) - C26-66 (PPC1)	Always	Below 1 Ω	Ω
  C12-1 (E2) - C26-64 (E1PC)	Always	Below 1 Ω	Ω
  C12-3 (VC) or C26-86 (V1PC) - Body ground and other terminals	Always	10 kΩ or higher	kΩ
  C12-2 (PPC1) or C26-66 (PPC1) - Body ground and other terminals	Always	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE VACUUM SENSOR ASSEMBLY. Refer to  REMOVAL [09/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR