Could be a stuck open injector or a pressure regulator.
Petrol mixed with witch oil...?
on one of the forum ages code p 1653 refers to SC V motor circuit
toyota recommended the change of both vacuum valve assembly parts T25860, -OHO30 and T25860-28070
the c person asking the question replaced the units and to date the problem was fixed
go google and type in --toyotanation.com as this is a forum page and most replies state that it is a vacuun valve assembly problem
one person had this to say the following malfunctions were experienced
VCS, VCSoff and engine check light on
the gear is alternately was stuck on overdrive --stay at the 3rd gear ( the od light not on)
the computer code reported a p1653 malfunction code
after replacing the vacuum valve assembly the symptoms went and haven't come back
any way go google and type in-- fault code p 1653 for toyota --and search pages to get a better understanding of what is wrong
SOURCE: My Toyota voxy mixes petrol with engine oil what can coz thus
It sounds like Blow by check your piston rings
SOURCE: My 2007 Toyota voxy d4 engine 1az has the check engine light scanner code p1589 how can I fix it
Hi. You may want to send this in for diagnostics. P1589: TCU Unable To Control Desired Throttle Angle. This code could be caused by a number of things. I don't know your skill level or how you want to proceed. Please write back and let me know how you want to move forward. While I have you I can tell you that A faulty ground connection could cause this. A faulty sensor or wiring at the throttle body and throttle pedal will cause this issue. There is more but Why don't you read this and let me know how you want to proceed. Good Luck.
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