Can a bad exhaust system cause the VSC Trac and the Check Engine light to come on?

Asked by Robert Aug 25, 2015 at 07:45 PM about the 2004 Toyota RAV4 Base 4WD

Question type: General

2 Answers

FordNut answered 8 years ago

Yes. The ECU will shut down the VCS/Trac intentionally when the DTC detects anything wrong in the power train. It doesn't want the brakes and throttle giving automatic commands when it's not running right

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GuruZWVX5 answered 6 years ago

I think I'm having the same problem I just install a new muffler and the 3 lights came on, the muffler shop saying the muffler has nothing to do with the lights coming on is this true ?

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