Question about 2006 Subaru B9 Tribeca
There is a lot of questions here so i will start with the codes P0028 & P0026 both are verable valve timing codes first we should talk about how this system works, the engine is equiped with veriable valve lift units that when oil is pushed into the units they push on the camshaft, basicaly they roll the shafts in there saddles witch changes the lift and duration of the camshaft this is done to maxamise the performance of the engine, basickly alowes the engine to be tuned down at low RPM and load but when there is a demand for power the cames are advanced to give the engine more power. when we see these codes the mose common problem is the engine has not been serviced reguarly and their is gunk built up in the oil passages to the veriable valve units, most of the time changing the oil and adding some addative like marvel mistery oil will fix the problem, if not then you may have to replace the veriable valve lift units.
the skip under load might be the verable valve units advanceing one cam and not the other, this would cause a surge and maybe an engine miss fire, but i would change the spark plugs as will as the oil ( it never hurts to replace the plugs ) but make sure to use what the factory used don't chepen it up spend the few extra dollers to get the right plugs.
the check engine light is the verable valve units.
now the flashing cruse and the TCL these are most likely related, and you should be able to get a code from the BCM that will leed you down the right path, but best guess is a speed sensor is not working, all 4 wheel have to be within 1% of each other or the cruse will not work, and the TC wont work and probly the ABS.
its a lot of info but i hope this helps.
Posted on Mar 12, 2011
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Posted on Jan 02, 2017
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