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My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
Since this occurred after the valve cover gasket was replaced I would have the repairs that were done re checked to see if any wiring was found to be bumped loose or damaged causing this issue here in the area of the repair.
If this is o.k. then the fault codes will have to be read out/checked with a fully compatible scan tool to see what codes are set.Once this is done any codes set will need diagnosed to help locate and correct this issue here.In some cases this may be a fault in the angle sensor in the steering column needing replaced.
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