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2005 Scion tC Problems

 

Check Engine Light Due to Defective VVT-i Controller

Verified for the Scion tC

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.

11 Reports
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CEL - Error Code 420: Catalytic Converter

Reported by garyla and 5 others for the Scion tC

Check Engine Light Illuminated
Problem: Diagnostic Showed Error Code 420: "Catalytic Converter Efficiency Below Threshold (Bank 1)
Solution: Free Replacement by Dealer Under California 7yr/70k or Federal 8yr/80k Warranty Covering Emissions Parts

6 Reports
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