LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2023 >> NX 250 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 120 (Engine Control System - Diagnostic Codes (P0010-P007A)) >> SFI System >> DTC P0011-00: Camshaft Position "A" - Timing Over-Advanced or System Performance Bank 1; DTC P0012-00: Camshaft Position "A" - Timing Over-Retarded Bank 1 [03/2023 - 03/2024] >> Procedure

DTC P0011-00: Camshaft Position "A" - Timing Over-Advanced or System Performance Bank 1; DTC P0012-00: Camshaft Position "A" - Timing Over-Retarded Bank 1 [03/2023 - 03/2024]: Procedure

WARNING: This page is about a different car, the 2025 Lexus NX 350, 2024 Lexus NX 350, 2023 Lexus NX 350, and 2022 Lexus NX 350. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011-00 OR P0012-00) 
    1. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTC P0011-00 or P0012-00 is output A
      DTC P0011-00 or P0012-00 and other DTCs are output B

      HINT: 

      If any DTCs other than P0011-00 or P0012-00 are output, troubleshoot those DTCs first.

    Result: 

    GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [03/2023 - 03/2024] 

    Result: 

    See step  2

  2. PERFORM ACTIVE TEST USING GTS (CONTROL THE INTAKE VVT OCV DUTY RATIO BANK 1) 
    1. Start the engine.
    2. Read the Data List while performing the Active Test with the engine idling.

      Powertrain > Engine > Active Test 

      Active Test Display
      Control the Intake VVT OCV Duty Ratio Bank 1
      Data List Display
      Intake VVT Change Angle Bank 1

      OK

      GTS Operation Data List (Intake VVT Change Angle Bank 1)
      -100% to 100% Varies by 70 DegFR or more

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  4

    Result: 

    OK 

    See step  3

  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011-00 OR P0012-00) 
    1. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    2. Turn the ignition switch off and wait for at least 30 seconds.
    3. Start the engine and warm it up.
    4. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    5. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC P0011-00 or P0012-00 is output B

      HINT: 

      DTC P0011-00 or P0012-00 may be stored when foreign matter in the engine oil is caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. That foreign matter may then be captured by the oil filter.

    Result: 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [11/2021 - ] 

    Result: 

    See step  4

  4. INSPECT CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (FOR INTAKE SIDE) 
    1. Inspect the cam timing oil control solenoid assembly (for intake side).

      Refer to INSPECTION [11/2021 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  9

    Result: 

    OK 

    See step  5

  5. INSPECT INTAKE CAMSHAFT TIMING GEAR BOLT ASSEMBLY 
    1. Inspect the intake camshaft timing gear bolt assembly.

      Refer to ON-VEHICLE INSPECTION [11/2021 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  11

    Result: 

    OK 

    See step  6

  6. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) 
    1. Remove the cylinder head cover sub-assembly.
      GTY1076329Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a 10.6° *b 21.91°
      *c Timing Mark *d "0" Timing Mark
      *e Groove - -
    2. Turn the crankshaft pulley and align its groove with the "0" timing mark of the timing chain cover.
    3. Check that the timing marks of the camshaft timing gear assembly and camshaft timing exhaust gear assembly are at the positions shown in the illustration.

      HINT: 

      If the timing marks are not at the positions shown, turn the crankshaft one revolution clockwise.

      OK

      Timing marks on camshaft timing gear assembly and camshaft timing exhaust gear assembly are at the positions shown in the illustration.

      HINT: 

      If the result is not as specified, check for mechanical malfunctions that may have affected the valve timing, such as a jumped tooth or stretching of the timing chain.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    See step  13

    Result: 

    NG 

    See step  7

  7. CHECK ENGINE MECHANICAL SYSTEM 
    1. Check for mechanical malfunctions that affect the valve timing, such as a jumped tooth or stretching of the timing chain.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

    Result: 

    OK 

    See step  8

  8. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011-00 OR P0012-00) 
    1. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    2. Turn the ignition switch off and wait for at least 30 seconds.
    3. Start the engine and warm it up.
    4. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    5. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC P0011-00 or P0012-00 is output B

    Result: 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [11/2021 - ] 

    Result: 

    REPLACE ECM. Refer to  REMOVAL [11/2021 - ] 

  9. REPLACE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (FOR INTAKE SIDE) 
    1. Replace the cam timing oil control solenoid assembly (for intake side).

      Refer to REMOVAL [11/2021 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  10

  10. INSPECT INTAKE CAMSHAFT TIMING GEAR BOLT ASSEMBLY 
    1. Inspect the intake camshaft timing gear bolt assembly.

      Refer to ON-VEHICLE INSPECTION [11/2021 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    See step  12

    Result: 

    NG 

    See step  11

  11. REPLACE INTAKE CAMSHAFT TIMING GEAR BOLT ASSEMBLY 
    1. Replace the intake camshaft timing gear bolt assembly.

      Refer to REMOVAL [11/2021 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  12

  12. PERFORM ACTIVE TEST USING GTS (CONTROL THE INTAKE VVT OCV DUTY RATIO BANK 1) 
    1. Start the engine.
    2. Read the Data List while performing the Active Test with the engine idling.

      Powertrain > Engine > Active Test 

      Active Test Display
      Control the Intake VVT OCV Duty Ratio Bank 1
      Data List Display
      Intake VVT Change Angle Bank 1

      OK

      GTS Operation Data List (Intake VVT Change Angle Bank 1)
      -100% to 100% Varies by 70 DegFR or more

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END 

    Result: 

    NG 

    See step  13

  13. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY 
    1. Replace the camshaft timing gear assembly.

      Refer to REMOVAL [11/2021 - 03/2024]

      HINT: 

      Perform "Inspection After Repair" after replacing the camshaft timing gear assembly.

      Refer to INITIALIZATION [11/2021 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  14

  14. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011-00 OR P0012-00) 
    1. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    2. Turn the ignition switch off and wait for at least 30 seconds.
    3. Start the engine and warm it up.
    4. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    5. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC P0011-00 or P0012-00 is output B

    Result: 

    END 

    Result: 

    REPLACE ECM. Refer to  REMOVAL [11/2021 - ]