SFI SYSTEM, Diagnostic DTC:P0016, P0018

DTC Code DTC Name
P0016 Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
P0018 Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)

DESCRIPTION

In the VVT (Variable Valve Timing) system, the appropriate intake valve open and close timing is controlled by the ECM. The ECM performs intake valve control by performing the following: 1) controlling the intake camshaft and camshaft timing oil control valve assembly (for intake camshaft), and operating the camshaft timing gear assembly; and 2) changing the relative positions of the camshaft and crankshaft.

DTC No. DTC Detection Condition Trouble Area
P0016 Deviation in the crankshaft position sensor signal and VVT sensor (for intake camshaft of bank 1) signal (2 trip detection logic).

  • Valve timing

  • Camshaft timing oil control valve assembly (for intake camshaft of bank 1, 2)

  • Oil control valve filter (RH, LH)

  • Oil pipe

  • Camshaft timing gear assembly (bank 1, 2)

  • ECM
P0018 Deviation in the crankshaft position sensor signal and VVT sensor (for intake camshaft of bank 2) signal (2 trip detection logic).

MONITOR DESCRIPTION

To monitor the correlation of the intake camshaft position and crankshaft position, the ECM checks the VVT learned value while the engine is idling. The VVT learned value is calibrated based on the camshaft position and crankshaft position. The intake valve timing is set to the most retarded angle while the engine is idling. If the VVT learned value is out of the specified range in consecutive driving cycles, the ECM illuminates the MIL and stores DTC P0016 (bank 1) or P0018 (bank 2).

MONITOR STRATEGY

Related DTCs

P0016: Camshaft timing misaligned at idling (bank 1)

P0018: Camshaft timing misaligned at idling (bank 2)
Required Sensors/Components (Main) Camshaft timing gear assembly
Required Sensors/Components (Related)

VVT sensor

Crankshaft position sensor
Frequency of Operation Continuous
Duration Within 1 minute
MIL Operation 2 driving cycles
Sequence of Operation None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored

P0010, P0020 (Camshaft timing oil control valve (bank 1, 2 ))

P0102, P0103 (Mass air flow meter)

P0115, P0117, P0118 (Engine coolant temperature sensor)

P0125 (Insufficient coolant temperature for closed loop fuel control)

P0335 (Crankshaft position sensor)

P0340 (VVT sensor)
Engine speed 500 to 1000 rpm

TYPICAL MALFUNCTION THRESHOLDS

One of the following conditions is met A, B, C or D
A. VVT learning value at maximum retarded valve timing (bank 1) Less than 18.5°CA (Crankshaft Angle)
B. VVT learning value at maximum retarded valve timing (bank 2) Less than 18.5°CA (Crankshaft Angle)
C. VVT learning value at maximum retarded valve timing (bank 1) More than 43.5°CA (Crankshaft Angle)
D. VVT learning value at maximum retarded valve timing (bank 2) More than 43.5°CA (Crankshaft Angle)

CONFIRMATION DRIVING PATTERN

A01HY14E02

  1. Connect the Techstream to the DLC3.

  2. Turn the engine switch on (IG) and turn the Techstream on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the engine switch off and wait for at least 30 seconds.

  5. Turn the engine switch on (IG) and turn the Techstream on [A].

  6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].

  7. Idle the engine for 5 minutes or more [C].

  8. Enter the following menus: Powertrain / Engine / Trouble Codes [D].

  9. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  10. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  11. Input the DTC: P0016 or P0018.

  12. Check the DTC judgment result.

    Techstream Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform steps [E] through [G].

  13. Drive the vehicle for 2 to 3 minutes [E].

    CAUTION:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

  14. Idle the engine for 5 minutes or more [F].

  15. Enter the following menus: Powertrain / Engine / Trouble Codes [G].

  16. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  17. Check the DTC judgment result.

  18. If the judgment result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs Click here.

    Tech Tips


    • If a permanent DTC is output, the system is malfunctioning.

    • If no permanent DTC is output, the system is normal.

INSPECTION PROCEDURE

Tech Tips


  • Bank 1 refers to the bank that includes the No. 1 cylinder*.

    *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.

  • Bank 2 refers to the bank that does not include the No. 1 cylinder.

  • The monitor for this DTC detects when the timing chain is shifted by one tooth or more.

  • Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0016 OR P0018)


    1. Connect the Techstream to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the Techstream on.

    4. Enter the following menus: Powertrain / Engine / Trouble Codes.

    5. Read the DTCs.

      Result
      Result Proceed to
      DTC P0016 or P0018 is output A
      DTC P0016 or P0018 and other DTCs are output B

      Tech Tips

      If any DTCs other than P0016 or P0018 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR)

    Tech Tips

    If the VVT system can be operated through the Active Test, it can be assumed that the VVT system is operating normally.


    1. Connect the Techstream to the DLC3.

    2. Start the engine.

    3. Turn the A/C switch on.

    4. Turn the Techstream on.

    5. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Linear (Bank 1) or Control the VVT Linear (Bank 2) / Gas Valve Control / VVT Change Angle #1 or VVT Change Angle #2.

    6. Perform the Active Test. Check that the displacement angle varies.

      OK
      Displacement angle varies.

    NG

    Click here

    OK

  3. 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.


    OK

    CHECK WHETHER DTC OUTPUT RECURS (DTC P0016 OR P0018) Click here

    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT)


    1. Inspect the camshaft timing oil control valve assembly (for intake camshaft) Click here.


    NG

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Click here

    OK

  5. INSPECT OIL CONTROL VALVE FILTER AND OIL PIPE


    1. A01HYQ3E03
      Text in Illustration
      *1 Bank 1
      *2 Bank 2
      *a Oil Pipe
      *b No. 1 Oil Pipe

      Remove the oil pipe or No. 1 oil pipe Click here.

    2. Remove the oil control valve filter RH or oil control valve filter LH.

    3. Check that the oil control valve filter and oil pipe are not clogged.

      OK
      The oil control valve filter or oil pipe is not clogged.

    NG

    REPLACE OIL CONTROL VALVE FILTER OR OIL PIPE Click here

    OK

  6. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY


    1. Inspect the camshaft timing gear assembly Click here.

      Tech Tips

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


    NG

    REPLACE CAMSHAFT TIMING GEAR ASSEMBLY Click here

    OK

  7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0016 OR P0018)


    1. Connect the Techstream to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the Techstream on.

    4. Clear the DTCs Click here.

    5. Turn the engine switch off and wait for at least 30 seconds.

    6. Turn the engine switch on (IG).

    7. Turn the Techstream on.

    8. Start the engine and warm it up.

    9. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

    10. Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

    11. Read the pending DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC P0016 or P0018 is output B

    B

    REPLACE ECM Click here

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here