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Thread: Toyota Vitz Engine Stalling - P1603 Error Code

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    Exclamation Toyota Vitz Engine Stalling - P1603 Error Code

    Hello,

    I am facing a critical issue with my vitz regarding Engine stall - P1603 Error Code. This issue bother me because my car engine stall in middle of the road anytime and I don't know the exact fault of this issue. This issue happen when my car is in low RPM or in Low speed with AC is ON. I first though there is some issue with AC but When I checked with mechanic told me the AC is fine. The mechanic said that car is giving some signal or reading that cause that issue but he don't know for sure. Engine Stalling is very furstrating issue i have experience now. I am attaching Freeze Frame Data of P1603 Error Code. Experts Can you check freeze frame data and suggest me whats the issue?

    @Xulfiqar @capsat @tyrone_40 @syncview @rajaatta @chinyoti @SER_GTR @murtaza_murti


    Trouble Code Recorded in ECU

    Toyota Vitz Engine Stalling  P1603 Error Code -1702719


    P1603 Freeze Frame Data

    Toyota Vitz Engine Stalling  P1603 Error Code -1702720

    Note: Save the freeze frame data image in order to view it bigger

    - RKBladeX

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    Quote Originally Posted by m_umairr View Post
    Happened to my vitz 2 weeks back when I poured two tanks of hobc. Nothing to worry. Use 2 tanks of super and then afterwards mix hobc with super, issue will be gone. My long selfs have decreased almost 90% using this technique, not 100% ok though


    Sent from my iPhone using PW Forums
    Thx for the update. Do you know what is the issue with HOBC with long self? what is the relation between them? is there any issue with ignition timing or something else?

    - RKBladeX
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    Quote Originally Posted by rkbladex View Post
    Thx for the update. Do you know what is the issue with HOBC with long self? what is the relation between them? is there any issue with ignition timing or something else?

    - RKBladeX
    No, I don't know about the linkage.
    A saw one of the PW members suggest it on some older post.
    But my long self issue is still there. I have used almost 4 tanks of regular fuel and 2 of mixed one.. of no use.
    I fear it has something to do with the Fuel pump..

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    Quote Originally Posted by rkbladex View Post
    Just to update you guys My car engine don't stalling now on low RPM or Speed during AC operation. I don't have done anything except one which is pouring Full Tank High Octane. So Now i realize this issue is related to Fuel. One thing happen when i pour full tank HOBC in my car now my car taking long self on Cold starting in morning or when engine is cold.

    Can you guys know what was the issue?

    - RKBladeX
    I am havivg same issue with my vitz 2005 my engine off on low rpm and on low speed and specially when i switch on my ac . I changed the plugs but it dosnt help . High octane can solve this issue ? Can i get ur num of fb is that we can discuss this on details

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    Yes high Octane will solve this issue. I will PM you my number.

    - RKBladeX
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    Yes high Octane will solve this issue. I will PM you my number.

    - RKBladeX
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    Quote Originally Posted by sajawal.thestud3 View Post
    I am havivg same issue with my vitz 2005 my engine off on low rpm and on low speed and specially when i switch on my ac . I changed the plugs but it dosnt help . High octane can solve this issue ? Can i get ur num of fb is that we can discuss this on details
    Do you perform any repair from mechanic to solve this issue?

    - RKBladeX
    If you found my response helpful!!. Don't forget to press like button

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    Error Code: P1603
    Description: Engine stall history.
    Solution:
    - Check the vacuum leak at the intake manifold.
    - Check PCV Valve for open.
    - Check the servo booster for leak.
    - Check the cylinder compression and valve tappet clearance.
    - Redo the throttle body cleaning properly and re-learn it.

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