Question about 2006 Subaru B9 Tribeca

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Check engine cruise control traction

Took my vehicle in for cosmetic repairs from an accident with a deer from a year prior with no mechanical problems and car well maintained. Repairs were passenger side inner and outer fender, headlight, grill, and bumper. After picking the car up from the repair shop and driving it only 2 miles the check engine light, traction control, and cruise lights all came on. Tooke the vehicle back to the repair shop after driving it to the next exit and back at highway speeds with no loss of power or any engine problems. Repair shop ran the codes and said it came back as an intake valve. The timing of the problem is rather odd and I was wondering if the problem could be (1)a painted over ground wire,(2) problem with a wire inside the fender they repaired, (3)the intake valve even though the engine seems to run fine?

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Posted on Jan 02, 2017

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SOURCE: We were driving on the interstate about 70 mph

I have owned five Subarus and this is a problem I that have never seen before. When your TCS light comes on, it disables cruise control, so that part should not worry you.

Since your TCS and check engine light came on together, I suspect the "problem" was with the transmission. It sounds like a one-time "fluke".

You can go to any good auto parts store and ask to borrow their ECM analyzer.... it is a "box" that wil talk to your Tribeca's computer and let you know exactly what the problem is. You connect it to the jack by the drivers side left knee, then turn the key on (but do not start). Follow the directions on the screen and it will give you a readout of what problems it sees.

Copy down the displayed information in case you need it.... The code number(s) and description(s) can be very helpful.

Follow the on-screen instructions and clear (erase) the problems. Turn off your car, disconnect the box, and after you return it drive home and see if the lights come back. You may have had a "freak" occurance, and that is what I am hoping happened... you hit a pothole or bump just right and the computer lost its mind for just a second....

If it gives you any peace of mind.... the 3.0 H-6 Subaru engine is the absolutely most solid, best performing engine I have ever experienced in a car.. Mine was a 2001 LL Bean Limited and I LOVED IT! My big mistake was giving it to one of my children.... but that story is best left to a blog and not this forum!!!

Good Luck!


Posted on Feb 12, 2011

  • 1702 Answers

SOURCE: check engine light on, traction

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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