Get a noid light to connect to the injector connector at #2. Start the engine and see if the light flashes. If so the injector circuit is operating properly (as far as switching the injector on and off is concerned).
If that's good, swap injector # 2 with another one and see if the code now indicates another cylinder. If so, that injector is faulty (though it may be new).
By the way $750 is far too much for changing out an injector.
What did they do to correct the P0203?
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Sunday, June 1st, 2014 AT 7:07 AM