# Fault Codes for '02 VW Passat **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** valves, noises, volkswagen, passat, engines\ **Created:** [August 31, 2010, 4:28pm UTC](https://community.cartalk.com/t/fault-codes-for-02-vw-passat/54456 "2010-08-31T16:28:21Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![estraghalis](https://avatars.discourse-cdn.com/v4/letter/e/90db22/32.png) [@estraghalis](https://community.cartalk.com/u/estraghalis)\ **Post date:** [August 31, 2010, 4:28pm UTC](https://community.cartalk.com/t/fault-codes-for-02-vw-passat/54456/1 "2010-08-31T16:28:21Z")
In a previous post ([http://act…48399.page](http://community.cartalk.com/posts/list/2148399.page)) had noted my initial symptoms that my V6 Passat has sounding like a diesel - although it is not! The sound is definitely under the hood - possibly the engine. It’s a steady sound that’s gotten progressively worse! I had the VAG-COM connected at Joe’s VW shop in Dedham, MA (GREAT GUY!) and the faults I got were: 16684 - Random/Multiple Cylinder Misfire Detected P0300 - 35-10 - - - Intermittent 16688 - Cylinder 4 Misfire Detected P0304 - 35-10 - - - Intermittent 16687 - Cylinder 3 Misfire Detected P0303 - 35-10 - - - Intermittent 16690 - Cylinder 6 Misfire Detected P0306 - 35-10 - - - Intermittent 16891 - Idle Control System RPM Higher than Expected. P0507 - 35-10 - - - Intermittent Any thoughts or ideas what this could mean!?! ---
**Author:** ![Bladecutter](https://avatars.discourse-cdn.com/v4/letter/b/aeb1de/32.png) [@Bladecutter](https://community.cartalk.com/u/Bladecutter)\ **Post date:** [August 31, 2010, 7:39pm UTC](https://community.cartalk.com/t/fault-codes-for-02-vw-passat/54456/2 "2010-08-31T19:39:49Z")
What was the last thing that was done to the car before the misfires started? Did you have a tune up done? Since the codes aren’t from a common bank of cylinders, the first thing I would do would be to pull off the ignition coil sticks and spark plugs, take a look at their condition, then snap everything back together tightly, and see if the misfire issue vanishes. If it does persist, then I would swap those three coil sticks with the other three cylinders, and see if the problems follow the coil sticks, or stay put. That would then lead to further choices. BC.