Misfire code 16685 on a 2002volkswagon. Beetle

What kind of test light did you use? A noid? Is it the injector that's not working, or the computer that sends the signal? Are you getting battery power to one of the injector terminals when the key is on?

P0638 throttle actuator control range/performance bank 1
P0300-304 misfire on cylinders 1-4

P0300 Random/Multiple Cylinder Misfire Detected P0301 Cylinder 1 Misfire Detected P0302 Cylinder 2 Misfire Detected P0303 Cylinder 3 Misfire Detected P0304 Cylinder 4 Misfire Detected P0305 Cylinder 5 Misfire Detected P0306 Cylinder 6 Misfire Detected P0307 Cylinder 7 Misfire Detected P0308 Cylinder 8 Misfire Detected P0309 Cylinder 9 Misfire Detected P0310 Cylinder 10 Misfire Detected P0311 Cylinder 11 Misfire Detected P0312 Cylinder 12 Misfire Detected P0313 Misfire Detected with Low Fuel P0314 Single Cylinder Misfire (Cylinder not Specified) P0315 Crankshaft Position System Variation Not Learned P0316 Misfire Detected On Startup (First 1000 Revolutions)

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P2195 O2 Sensor Signal Stuck Lean Bank1 Sensor 1 P2196 O2 Sensor Signal Stuck Rich Bank1 Sensor 1 P2197 O2 Sensor Signal Stuck Lean Bank2 Sensor 1 P2198 O2 Sensor Signal Stuck Rich Bank2 Sensor 1

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code p0302 refers to misfire detected cylinder 2===causes --engine mechanical fault--wiring---ignition/ fuel system---injector--ECT/MAF sensor---ECM
check the injector is working ok

CYLINDER 4 MISFIRE COULD BE CAUSED BY BAD SPARK PLUG BAD WIRE FAULTY COIL OR MORE LIKE FAULTY FUEL INJECTOR OR DIRTY CLOGGED FUEL INJECTOR.

if check engine light is on OBD 2 Scan it retreve the fault code # and repair stop the gue$$ing to costly$$$.John

this car has what is called coil over ignition which means no plug wires or cap so if it is missing swap coil from cyl 2 and any other cyl then clear code and rerun car till light comes back on then check code if it is still cyl 2 missfire then replace that plug if code changes to the cylinder that 2's coil was on then replace that coil <that car does have a recall for coils> if car is not missing and you have that code most likely isnt an ignition problem but will have a small vaccume leak so check the small hoses for leaks. very common for fuel preasure regulater vaccume hose to brake from age

Hi, Yes it certainly could be especially if water gets in. You should also check the distributor cap. The misfire sounds like an arcing problem so it would have to be one of those two things since you changed the rest. Good Luck!

first check cylinder 1 , spark plug, ht leads, coil,

then clean the trottle body with carb cleaner

if that does not work replace the throttle body, comes complete, and do a basic setting on it with diagnostic machine

hi am no genius but is your car fuel injected ,if so maybe the injector maybe partly blocked and can cause the miss firing of the cylinder. maybe try some good carby cleaner ,it may help