If you are sure that the timing belt is sitting where it was (mark the teeth on the belt and on the sprockets), then no, no need to reset timing.
Timing is actually not adjustable.
If the check engine light comes on AFTER the belt is back on and the engine is running, you are probably out a tooth or two.
This is an interference fit engine (valve damage will occur if camshaft / crankshaft timing is too far out.
Thomas
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Sunday, September 29th, 2013 AT 10:24 AM