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Hi Im David, thanks for visiting the site. allow me a moment to look up some information for you. thank you.
P1582 VOLKSWAGEN - Idle Speed Adaptation Limit Reached Possible causes - Intake/exhaust leak - AIR system - Fuel pressure/pump - Fuel injector(s) - EVAP canister purge valve
P1216 VOLKSWAGEN - Injector Circuit Cylinder 4 Short To Positive Possible causes - Faulty Fuel Injector - Fuel Injector harness is open or shorted - Fuel Injector circuit poor electrical connection
P0304 VOLKSWAGEN - Cylinder 4 Misfire Detected Possible causes - Faulty spark plug 4 - Clogged or faulty fuel injector 4 - Faulty ignition coil 4 - Fuel injector 4 harness is open or shorted - Fuel injector 4 circuit poor electrical connection - Ignition coil 4 harness is open or shorted - Ignition coil 4 circuit poor electrical connection - Insufficient cylinder 4 compression - Incorrect fuel pressure - Intake air leak
first thing to do is put a noid light on the connector for the #4 fuel injector then crank the engine to see if the light flashes, if it does then Replace the #4 fuel injector
Have you had a chance to do anything i suggested?
just checking in to see how its going
Different expert here, I can send you the steps to diagnose these codes from the factory service manual if you would like.
Hello again Dan here,
I am contacting you because the post has not been closed or rated.
This question is coming up on 7 days which means it will time out and close.
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Let me help some more. Is there anything else I can help you with?
If I did not give you 5 star service, please let me know what I missed.