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VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old May 14th, 2018, 20:11   #1
jenxo
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Join Date: Feb 2011
Location: Anaheim CA
Unhappy 300k Jetta Tdi - Replaced Crank Sensor, now 3 codes : 0722,0228,0671

Hi,
I've been trying to fix my 2002 Tdi for over a year now.
Basically drives perfectly fine for about 10-20min and then dies. Try to crank, doesn't fire up. I wait for about 5 hours, starts right up. ( the Speedometer is still not working, even though I replaced it with a Speed sensor a while back).


I got a tip from a local mechanic who said it was the CRANK POSITION SENSOR. I ordered a new one, installed it in 5 min.
Drove the car 1 mile, and the Check engine light came on. First time I saw it come on. From my cheap OB2 Reader I get :

P0722 - appears to indicate speed sensor
P0671 - appears to indicate Glow plug #1
P0228 - Throttle position sensor or alternator/low voltage ?



Help....any ideas ??

Update: I erased the codes, drove it 1 mile. Parked it, Turned it off and now it wont start. Took about 6 cranks and then it started running. Turned it off, wouldn't start again. pulling my hair out. Ive replaced Relay 109, fuel sender, some hoses, fuel filter and few other things..nightmare. I need DIESEL NOW, since gas is up up! Help!!

Last edited by jenxo; May 16th, 2018 at 22:10.
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Old May 14th, 2018, 20:47   #2
ToxicDoc
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it would be easy to test your glow plugs with a meter now and checking/cleaning all the contacts with Deoxit. P0228 can be a few things from what I have read. It doesn't come up on the RossTech website. May be worthwhile to find someone with the VCDS to get better codes.

Last edited by ToxicDoc; May 14th, 2018 at 20:51.
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Old May 15th, 2018, 02:33   #3
Tdijarhead
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Replace the new crank sensor with oem. That may or may not still leave you with your original problem.
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Old May 15th, 2018, 04:20   #4
JB05
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Recheck your installation of the new sensor. Using the bolt to seat the new sensor could warp it according to another member here who had similar problems after a new sensor was installed.
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Old May 15th, 2018, 04:24   #5
oilhammer
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Non-OEM level sensor, incorrect installation, rust caught between sensor body and block mounting surface, etc. can all cause issues.

I thoroughly clean both the flat mounting surface and the hole... if it is really bad I drain the oil afterwards, as that hole opens directly into the crankcase.

Then I lube the o-ring on the new sensor with some petroleum jelly, and push it in until it seats... you'll feel it slide (almost a "pop") into place, then gently rotate it to line up the retaining bolt hole.

Also make sure the wire on the engine harness side is not rubbed through anywhere.
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Old May 15th, 2018, 22:21   #6
jenxo
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It starts up fine on a cold start, after I run it around the block, and park it, try starting it again, and it takes 5-6 cranks to start.

Now...
A mechanic I spoke to mentioned it is likely the CAMSHAFT POSITION SENSOR that needs replacing.
I can't find the location of the CPS or how to install it on Youtube.
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Old May 16th, 2018, 03:12   #7
oilhammer
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Do not speak to that "mechanic" ever again. Your car has no CMP sensor.

I already posted some hints, have you looked into that?
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Old May 16th, 2018, 22:09   #8
jenxo
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Thanks, this weekend I'm going to redo my CRANKSHAFT POSITION SENSOR installation, following your suggestions. I truly appreciate your kind help.
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Old Yesterday, 16:15   #9
jenxo
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Quote:
Originally Posted by jenxo View Post
Thanks, this weekend I'm going to redo my CRANKSHAFT POSITION SENSOR installation, following your suggestions. I truly appreciate your kind help.
It just threw a GLOW Plug #1 Check engine light
P0671

Last edited by jenxo; Yesterday at 16:19.
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