Know your car

How to solve code P0015 and P0017 (Toyota or Lexus) of vehicles having rough idling and hard acceleration

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When your Toyota or Lexus cars have just started idling rough or not accelerating easily the way it used to be, you plugged in a scanner and found out the codes P0015 P0017 (both current), as shown below. when this happens, the engine-valve timing is altered.  P0015   P0017 how can engine-valve timing be altered even when no body loosed the engine? Most of the new model vehicle are equipped with variable valve timing inlet (VVTi) camshafts, which help adjust the valve timing of the vehicle when operating on certain loads, to help boost the engine performance at that particular instance. then readjust the timing to the normal point on average working conditions.  But when an ECU commanded the VVTi cam gear to return to the normal point and it's not working, this'll prompt the computer to throw the code P0015 or P0017 or both accuring at the same time, with the check engine showing on the dashboard. When the cam gear failed to return to the normal point after adjustment, this'

How do I get the check engine light to go off?

How to Reset a Check Engine Light

Check engine lights go on when there is a problem in the engine or the emissions control system. You should always have the codes generated by your car's computer scanned and read so you can determine the cause. You can reset the light once you have fixed the problem. This article will tell you how to reset the check engine light in your vehicle.

Method One of Two:
Use a Code Scanner

  1. 1
    Connect the scanner to the on-board diagnostic connector (OBD-II) under your steering column. Turn your ignition switch to "On." Turn off all accessories.

  2. 2
    Press the "Read" button on your scan tool to view the engine's error codes.Write down the code or codes in the order they were received for future reference and repairs if necessary.
  3. 3
    Press the "Erase" button on your scanner to clear the error code.Clearing any codes present will turn off your check engine light. Some scanners have other capabilities like freeze frame that records some sensor readings when a code was set and erasing the codes will also erase this file.
    • Some scanners might have an automatic option and a "Yes" or "Clear" button instead of the "Erase" button.

Method Two of Two:
Erasing the Code (Old Way)

  1. 1
    Disconnect your car's battery by removing the positive and negative cables. Use a wrench to remove the cables if necessary.
  2. 2
    Press and hold your horn for 30 seconds to drain any remaining electricity from the capacitor.
  3. 3
    Wait 15 minutes and reconnect your battery. The codes should be erased which will cause your engine light to turn off. This process may not work on all vehicle's computers. If the battery is disconnected and the light comes right back on, this may indicate an active problem and should be addressed and fixed.

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