Check Engine Light Due to Defective VVT-i Controller: Scion tC Engine & Powertrain

Problem overview

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.

47 people reported this problem

15 comments

Schedule Repair

Scion tC vehicles with this problem

6 model years affected

Average mileage: 124,260 miles

(32,000 - 226,000)

Repairs related to this problem

Check Engine Light Diagnosis & Testing

Search for another problem

RepairPal ™Car Genius

Ask our experts about your Scion.

RepairPal Car Genius™ is a free resource for vehicle owners seeking advice on maintenance, auto repair, shop inquiries, estimates, and finding a trustworthy repair shop in your area.

Exceptional warranty

Shops offer at least a 12-month or 12,000-mile warranty.

Satisfied customers

We ensure high satisfaction through verified customer reviews.

Transparent pricing

You'll get a Fair Price Guarantee on all RepairPal estimates.

Millions trust us for auto repair — RepairPal Certified^® locations must pass a rigorous approval process to ensure quality, customer satisfaction, and fair pricing.

Find a Repair Location

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

Problem overview

Scion tC vehicles with this problem

Need a diagnosis? Trust our Scion experts.

Search for another problem

Ask our experts about your Scion.