Question about Volkswagen Passat
DTC P0302 and P0306 means misfire condition that you description us, may mean that one or more of the following has happened:
* Faulty spark plug or wire
* Faulty coil (pack)
* Faulty oxygen sensor(s)
* Faulty fuel injector
* Burned exhaust valve
* Faulty catalytic converter(s)
* Running out of fuel
* Poor compression
* Defective computer
If you change the spark and plug wires, continue testing the other options; the possible solutions, if there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
Or, if there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
Keep us updated.
Posted on Sep 11, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Aug 17, 2011 | 2001 Volkswagen Passat
Feb 20, 2011 | Volkswagen Passat Cars & Trucks
Aug 19, 2010 | 1999 Volkswagen Passat
Jan 26, 2010 | 1999 Volkswagen Passat
Sep 16, 2009 | 1999 Volkswagen Passat
Jun 26, 2009 | 1999 Volkswagen Passat
Jun 18, 2009 | 1996 Volkswagen Passat
Apr 29, 2009 | 1996 Audi A4
Oct 16, 2017 | Volkswagen Cars & Trucks
104 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: