P0018

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

DTC Detection Condition:

The electric VVT changes the valve timing according to the motor. In comparison to a conventional hydraulic VVT, the valve timing range is greater and the VVT operates even when the engine rpm is low or the engine is cold. As a result, it is possible to increase engine output and mileage.

The camshaft control timing motor is equipped with a self diagnostic function, which is used to output diagnosis signals (VTM) to the ECM.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

These DTCs are output when a valve timing deviation condition is detected. While the vehicle is being driven or the engine is idling (after the battery terminals are reconnected), if a valve timing deviation is detected during the valve timing initialization operation, it is determined that a malfunction has occurred. If this condition is detected while driving, a DTC is output (2 trip detection logic). However, if the valve timing is deviated, the camshaft position sensor malfunction DTC P1340 may be output.

A DTC is output if the following occurs: 1) the engine is idled, and then the engine switch is turned off; and 2) the engine is started and the engine is idled.

DTC P0016 and/or P0018 may be output if the battery is reconnected and the engine is started while the following are disconnected from the camshaft timing control motor: 1) power source harness or connector; or 2) ECM harness or connector.

If P0016 and/or P0018 is output, check if the harness or connector is disconnected.

Step 1:

Step 1(Continued)-2:

Step 3-4:

Step 4(Continued):

INSPECTION PROCEDURE

HINT:
- Intelligent tester or Techstream only:
By using the Active Test's MD VVT B1*1 or MD VVT B2*1 (Control the MD VVT Linear (Bank1) or Control the MD VVT Linear (Bank2))*2 function, it can be determined if the MD VVT system is malfunctioning.

*1: Intelligent tester
*2: Techstream

a. Connect the intelligent tester or Techstream to the DLC3.
b. Turn the engine switch on (IG) and turn the tester ON.
c. Start the engine and warm it up.

d. Enter the following menus:
- Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / MD VVT B1 or MD VVT B2 / PRIMARY / MD VVT AIM ANG1 and VVT CHNG ANG#1 or MD VVT AIM ANG2 and VVT CHNG ANG#2.
- Techstream - Select: Powertrain / Engine / Active Test / Control the MD VVT Linear (Bank1) or Control the MD VVT Linear (Bank2) / All Data / MD VVT Aim Angle (Bank1) and MD VVT Change Angle (Bank1) or MD VVT Aim Angle (Bank2) and MD VVT Change Angle (Bank2).




e. Perform the Active Test operation with the engine speed at 1500 rpm.

- Read freeze frame data using the intelligent tester or Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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.