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: 1999 pontiac gran prix gtp has engine code po650
If you are not experiencing any actual driveability problems such as with your brakes, considering the DTC P1653 with P0650 then the problem may be electrical.
Start your search with the fuse for your traction control system, it is under the hood in the compartment mounted to the passenger side strut tower. If nothing is wrong with that then check your wiring harnesses from that box for loose connection or wire damage, and also under the dash.
SOURCE: toyota voxy speed sensor
two things:
1. dont drive the car when engine light signaling....must be a error in engine
2. speed sensor is probably placed in wheeldrum or in gearbox.
SOURCE: how can I maintain a 1AZ Toyota engine to last
I have a Corolla which we call "old faithful". It has never missed a beat except twice when we had to replace the battery.
During this time I have had an Isuzu which doesn't run anymore, a CAM (Chinese pick up) which I sold, thank goodness, and I presently have a Mahindra Scorpio truck, but old faithful will never be sold. I have pledged it to my grandson for when he gets his drivers license.
Frankly, we don't touch the engine. Every 20 000 km I replace the filters, drain and replace the oil and the spark plugs and that's it, unless I forget and just let it run another 20 000 km.
SOURCE: what is dtc code 98 in my 1az-fe toyota nadia
My engine starts but does not accelarate. Im using Toyota nadia d-4
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