Camshaft Position Sensor Help

[Styleprojekt]

Hey guys. Audi diagnosed my check engine light was triggered by a bad Camshaft Position Sensor. I know there are 4 on the 3.0 engines, top-rear on each bank of the engine. There is a Sensor faulty on "Bank 2" of my engine. Now, how can I tell which exact one it is? (also, what side is bank 2?)
I dont wanna spend $185 for a sensor plus labor there...i got their part number and pulled them up for $30-35 a piece. Anybody gotten one of these and replaced it themselves? Any input to help me out?

Cheers everyone and Merry Christmas Eve

[A4_Joe]

i believe bank 2 is the driver side

[dougyfresh]

There should only be two camshaft sensors on the 3.0. One for each head. If the 3.0 is similar to the 2.8 then one side is up front and the other is out back. [I know the 2.8 and 2.7 better than I know the 3.0 so I'm just speculating about the 3.0 here.]

[nezach]

It looks like there are 4 of them.



16. Valve stem oil seal
17. Camshaft Position (CMP) sensor
Cylinder bank 1 (right) Camshaft Position (CMP) Sensor -G40-:
Cylinder bank 2 (left) Camshaft Position (CMP) Sensor 2 -G163-
18. 10 Nm
19. Camshaft Position (CMP) sensor for exhaust camshaft
Cylinder bank 1 (right) Camshaft Position (CMP) Sensor 3 -G300-
Cylinder bank 2 (left) Camshaft Position (CMP) Sensor 4 -G301-
20. O-ring
21. 10 Nm
22. Camshaft Position (CMP)sensor housing
23. Gasket


Left head is driver side.
Right head is passenger side

[Styleprojekt]

Thanks for the replies. I was able to make out from Bentley Manual that there are 4. I just dont know how i can tell which sensor is bad :( i think ill call Audi again on the 26th or whatever and see if i can get the codes they pulled then go from there

[diagnosticator]

Yeah, unlike the AMB, with VVT on the intake cam, the 3.0L has variable cam timing on the intake cams and exhaust cams.

[diagnosticator]

Thanks for the replies. I was able to make out from Bentley Manual that there are 4. I just dont know how i can tell which sensor is bad :( i think ill call Audi again on the 26th or whatever and see if i can get the codes they pulled then go from there

Each sensor has it's own DTC number. What is the DTC recorded?

[AudiA4_20T]

Yeah, unlike the AMB, with VVT on the intake cam, the 3.0L has variable cam timing on the intake cams and exhaust cams.

damn them! lol

[LampyB]

yup, get those codes from them. they should also be able to tell you exactly which sensor is bad, and if you have a good service tech. open the hood and have him point it out.

[monkey323i]

dam !!

I just replaced one of my Camshaft position sensor 4 monthes ago at stealership.

Paid $350 including part and labour.

[f0reignfeatures]

Hey guys,

I'm trying to replace the bank 1 cam shaft position sensor. My car was throwing the p0342 code "bank 1 low input" sporadically for a while but was running fine until this morning. I tried turning the car on, it cranked but wouldn't start. I tried again and it turned on but stalled immediately, giving it gas didn't seem to make a difference. I bought the new sensor and I'm trying to replace it but I can't find where it is. I purchased a bentley manual this morning but it's wont get here for a few days & I don't want to bum rides all weekend.

The diagram nezach posted helps a little but I still don't know exactly what to move/where that spot is. If I understand correctly the bank 1 sensor is on the passenger side on the rear side of the motor (by the windshield not the radiator) right? I can't actually see where this assembly is when I look at the engine bay. Hope someone can chime in, as always positive input is appreciated!

p.s. I did remove the plastic audi cover to look. I'm not that much of a noob, haha.

[blitz2190]

front side under the top timing cover(assuiming its sensor 1 bank 1), cover pops right off and two 10mm bolts to take out the sensor. Which sensor does it say? G40, G163, G300, or G301?

[f0reignfeatures]

You're probably thinking of the crankshaft position sensors blitz, the camshaft position sensors are located on the back of the engine when you're facing it, closer to the windshield. I got my bentley manual but that diagram above is what I used to find and replace it. I don't know for sure which sensor on bank 1 it is since I only used the OBD scanner at autozone and the car still wont drive well enough for me to get to the dealer/parts store. Also, for future reference bank 1 IS on the passenger side and bank 2 is the driver side when facing the engine. In order to get to the sensors on bank 1, the easiest thing to do is remove the intake tube connected to the airbox and they're both right underneath. It has one screw I removed using an allen tool, you can pull it right off (gently).

I replaced the sensor but the car still started roughly so I ended up doing a tune up & replaced my plugs/coils and did the valve cover gaskets since oil was leaking into the spark plug holes and onto the engine especially on bank 1. It still started rough so I thought about it and did some more research and I'm going to replace my fuel pump. The car was making a loud humming noise for the past two weeks or so (I figured it was just a fan from using the AC since the weather has gotten warm here in VA). From what I've read that was the sound of the fuel pump failing. Also, the car sputters alot when I start it, and when I give it gas it makes a strange vacuum noise and almost stalls, if the pump has failed that would make sense since gas isn't being delivered to the engine. I should be done with the job this weekend, luckily my buddy is letting my drive his mk3 jetta in the meantime. I'll keep y'all posted, thanks!

[f0reignfeatures]

Also, my car is also a 3.0 like the original poster. Didn't mention it but just throwing it out there to clear up any confusion.

[blitz2190]

You're probably thinking of the crankshaft position sensors blitz, the camshaft position sensors are located on the back of the engine when you're facing it, closer to the windshield. I got my bentley manual but that diagram above is what I used to find and replace it. I don't know for sure which sensor on bank 1 it is since I only used the OBD scanner at autozone and the car still wont drive well enough for me to get to the dealer/parts store. Also, for future reference bank 1 IS on the passenger side and bank 2 is the driver side when facing the engine. In order to get to the sensors on bank 1, the easiest thing to do is remove the intake tube connected to the airbox and they're both right underneath. It has one screw I removed using an allen tool, you can pull it right off (gently).

I replaced the sensor but the car still started roughly so I ended up doing a tune up & replaced my plugs/coils and did the valve cover gaskets since oil was leaking into the spark plug holes and onto the engine especially on bank 1. It still started rough so I thought about it and did some more research and I'm going to replace my fuel pump. The car was making a loud humming noise for the past two weeks or so (I figured it was just a fan from using the AC since the weather has gotten warm here in VA). From what I've read that was the sound of the fuel pump failing. Also, the car sputters alot when I start it, and when I give it gas it makes a strange vacuum noise and almost stalls, if the pump has failed that would make sense since gas isn't being delivered to the engine. I should be done with the job this weekend, luckily my buddy is letting my drive his mk3 jetta in the meantime. I'll keep y'all posted, thanks!

no i was thinking camshaft but forgot they are all on the back of the 3.0(I've only worked on 2.7t an 1.8t, had a 3.0 long enough to pull the motor and sell for $100 haha) those number i said are still the camshaft sensors though.

[SJorge3442]

The cam sensors are here on the 3.0. One torx bolt holds them in. Just be careful when removing so you dont snap them as they are fairly fragile. Should take no more than 10 minutes to swap the sensor.

Remember. When it comes to electronics, only buy genuine Audi parts or you can expect to have problems.

[y0itzflip]

sorry for bumping an old thread, but im having a similar issue. im getting p0366 16750

which cam sensor is Camshaft Position Sensor (G300) ?

[f0reignfeatures]

Sorry to bump an old thread but I just wanted to 2nd that using OEM sensors are the only option when doing this job. I tried Hella sensors and the car would still start roughly as I had described above. I made the mistake of replacing and throwing away the old fuel pump, which was working just fine, because I thought it was the problem (foolish I know). All of the sputtering and vacuum noises were still there after the fuel pump job but went away when I swapped the hella sensors out for new OEM ones.

Another tip, the little rubber gasket/o-rings on the sensors are kind of thick when they are new making it very difficult to put them into place. The o-rings from my old sensors were still in good shape so I carefully removed and re-used them. Once I did that the sensors went into place with no problems and after a year I have no issues.

As far as flip's question about which sensor is which, the easiest way to find out is by plugging in to a vag-com, my local VW/Audi guys were able to do this for me for free and tell me exactly which sensors were faulty.

[diuvic]

Sorry to bump an old thread but I just wanted to 2nd that using OEM sensors are the only option when doing this job. I tried Hella sensors and the car would still start roughly as I had described above. I made the mistake of replacing and throwing away the old fuel pump, which was working just fine, because I thought it was the problem (foolish I know). All of the sputtering and vacuum noises were still there after the fuel pump job but went away when I swapped the hella sensors out for new OEM ones.

Another tip, the little rubber gasket/o-rings on the sensors are kind of thick when they are new making it very difficult to put them into place. The o-rings from my old sensors were still in good shape so I carefully removed and re-used them. Once I did that the sensors went into place with no problems and after a year I have no issues.

As far as flip's question about which sensor is which, the easiest way to find out is by plugging in to a vag-com, my local VW/Audi guys were able to do this for me for free and tell me exactly which sensors were faulty.

Huh, I thought Hella was the OEM Supplier for a lot of sensors on our cars. If anyone has the time, I get this in VCDS:

17746 - Camshaft Position Sensor (G40)
P1338 - 001 - Open or Short to Plus - Intermittent - MIL ON

Where is this one located? Driver side or Passengers side? My car starts right up and doesn't sound rough or anything. Is that weird? Hmm....

[Furly]

2001 Audi 2.8 a6 cam sensor replacement: Driver side Is there a trick to removing this? there is a hose that seams to be in the way the clamp holing it on,It is turned so I cant get it on. Any help would be great! Sorry I cant figure out how to start a new Thread

Wrong section. Try the C5 A6 section of the forums.

[Furly]

Remember. When it comes to electronics, only buy genuine Audi parts or you can expect to have problems.]

While this is true in a way, you don't have to buy the oem part. You can buy the OEM manufacturer part for much cheaper. Audi doesn't make parts , they have other companies make them and stamp the 4 rings on it. For example our oxygen sensors and cam sensors, MAF and Map sensors are all made by bosch. The oem audi ones even have the bosch logo on them by the 4 rings.

Shop smart and you'll save a ton of cash on car parts.

[Garf]

I got a P0025 or 16409 error code.

I picked a new sensor but the error message logged on my Autel scanner says "B Camshaft Position Timing Over-Retarded Bank 2" I know is it on the driver side, but which one? there is two on the driver side.

[f0reignfeatures]

Why not try replacing one with the new sensor and clearing the code? If it comes back switch it, if it doesn't then you're probably good. Bank 2 is easy to get to and it should only take you a few minutes to swap. In my case I had to swap both sensors on Bank 1 (the side closest to the airbox) in order to get the car running properly, so don't be surprised if you need to pick up another. Then again my error code was completely different.

If you get it all figured out don't forget to post on here for future reference, good luck!


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[Garf]

I just replaced the sensor on the driver's side and cleared the code. Drove the car for a while and the engine light never came back on. Fingers crossed it stays that way.

Before doing the sensor change, several people told me that the driver's side is the easiest to change. Well, I have the say, it is the worst side to change because of numerous wires, tubing and the stupid coolant reserve tank that gets in the way.

If any further sensors go, the air box side looks a lot more open space to get at.

[BB c7]

I just replaced the sensor on the driver's side and cleared the code. Drove the car for a while and the engine light never came back on. Fingers crossed it stays that way.

Before doing the sensor change, several people told me that the driver's side is the easiest to change. Well, I have the say, it is the worst side to change because of numerous wires, tubing and the stupid coolant reserve tank that gets in the way.

If any further sensors go, the air box side looks a lot more open space to get at.

Hi i am running in to same problem just can not locate the sensor. Would u able to snap a picture and point it out for me ? I am getting code p034500. Camshaft position sensor circuit bank2. So i am guessing one in the driver side is the bank 2 right ?


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[Protection]

The ones for the passenger side (bank 1) are where the connectors plug in at the red arrows. They are located in essentially the same position on Bank 2, just beneath the coolant reservoir



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