Scion xB Problems

Check Engine Light Due to Defective VVT-i Controller on Scion xB

Problem Description and Possible Solution

An illuminated Check Engine Light could be caused by a defective VVT-i controller, which changes cam timing for optimal power.  Updated parts are available and the repair may be covered under the powertrain warranty.

(58 people reported this problem)

Scion xB Vehicles With This Problem

RepairPal Verified
Average mileage: 87,528 (31,000–187,000)
Engine affected: 2.4L 4 Cylinder
6 model years affected: 2004, 2005, 2006, 2008, more2009, 2010
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Viewing 1-20 of 22 comments
Check engine light, my traction light, and the 'VSC off' light is on. Car is stock. Driver (me) is PISSED. I haven't ran the codes on it yet ( I work for Hyundai and drive a toyota hahaa so I cant take it there) and I need to know what this means and how much this is gonna cost me. I can't seem to find that out online. Thanks.
Nothing was done and all of a sudden last night after we left familys driveway to go home from thanksgiving dinner VSC light Trac Off light and Check Engine Light came on trying to troubleshoot the problem before spending money on the box. Any ideas it's my boyfriends car and i work at a dealership they told me to unplug the battery for 5 mins plug it back in and then if it comes back on get the codes to find the problem. I hear alot about sparkplugs and 02 sensors gas caps seems like it could be a menagerie of things hope someone has a clue to help.
Check engine light comes on, then the Trac off and VSC light. It will stay on at times for days and then go off, then come back on again. I unplug my battery and reset it...but eventually it will come back on again.
I have this as well - been quoted $1422 to fix. told that if I just leave it, it will disintegrate and damage the engine. Any ideas if this cost is reasonable or the risk of damage is true?
Check Engine light (which also causes traction off) caused by bad cam pulley. The oil-pressure-activated variable cam timing mechanism failed. Fixed by replacing the cam pulley.
My Scion XB has had the same peroblem since the last factory tune waas due. I do not take my car to the dealership to be checked out. THe solution is with the gas tank and all you have to do is rest the lights on the dash. My Scion XB now has 176,000 miles on it and the light always come on when I fill the tank, I reset the lights and they go off. I have been told by my Mechanic unless the check engine light comes on alone and stays on to ignore these lights. I have and no problems since purchasing the car in 2006.
check engine light comes on and stays on until the dealers service man does something under the dash or hood and it goes out. Takes about 1 to 2 min. to fix.....
Just had Scion dealer check engine,vsc,trac lights. vvti was diagnosed. $244 for part.$499 total.
This has been an ongoing problem since the 50,000 mile mark. I have been advised that this is caused by an automatic sensor and told not to worry just to reset. It come on and goes aft all the time.
I had the check light engine malfunction issue 4 years after purchase- it took 200.00 to diagnose and estimate of over a grand to fix. I clear the codes and run through emissions when due. avoid the cost of the fix
Same error code.....failed emissions. Shop said this is a known issue with years of scion. 1 of 3 things, all expensive because it involves the cam and retardation on timing. Stupid car.
I had the same problem. Millage is now 201,000 same issue with three lights coming on and going off. This problem is easily remedied.
Do nothing! Lights come on after I fill up with fuel then then go off around half tank then come back on around a quarter of a tank. My car has had no other mechanical issues other tan replacing an alternator and couple of belts an battery since I purchased my Scion in 2006. I continue to hear the same answer with the Cam. I take excellent care of my car it has been a wonderful vehicle for me.
Hasn't been fixed driving for 70k more miles and care still running smooth. Lights are on though
Trouble code P0012 would not go away. Took it to dealer three times before they got it right. Cost me 1200$ to replace the VVTi actuator TWICE. The first time, dealer performed diagnostics and found minor wiring damage. Second time they installed defective OEM actuator, third time they replaced the bum actuator. No more trouble codes (for now). We'll see how long it lasts.