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I have a 2004 volkwagen Passat v6 4motion with 131,000 miles

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and sometimes when I drive...
I have a 2004 volkwagen Passat v6 4motion with 131,000 miles and sometimes when I drive down the road epc,traction control and check engine light comes on and the car starts to run ruff. And you can't drive it any more. And the codes are p0221, p0507,p0171,p0174.
My question is how can I fix it?
Submitted: 2 years ago.Category: VW
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Answered in 13 minutes by:
7/29/2015
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
Tim Mohr
Tim Mohr, ASE MASTER TECH
Category: VW
Satisfied Customers: 16,215
Experience: 30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
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Hi, my name is ***** ***** these codes, its usually a dirty throttle body, and cleaning it usually fixes all these codes, but ince cleaned, the throtlle body needs to relearn the idle and throttle settings, and this requires a scanner to do this, do you have a scanner?
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Customer reply replied 2 years ago
I have a scanner. My mechanic and I cleaned the throttle body a few days ago. And it still happens. This far I've put in new plugs and wires, intake gaskets, cleaned out the breather hose. But the epc and tc light just came on after cleaning the throttle body
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
did you do the throttle relearn procedure after cleaning the throttle body?
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Customer reply replied 2 years ago
I'm not sure, what exactly is that and what are the steps? And if that doesn't work what else could it be?
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
you use the scanner to initial lize the throtle and relearn its position, a VAG scanner is required o do this, the light will not go off until this is done,Tim
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Customer reply replied 2 years ago
Can the throttle body out of adjustment cause a system too lean code?
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
Yes, it can and will, Tim
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VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
you need more help with this?
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Customer reply replied 2 years ago
I will be at my guys shop soon. I will let you know how it goes.should I replaced the throttle position sensor?
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
No, first off relearn the throttle with the scanner,Tim
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Customer reply replied 2 years ago
I did that then a couple mins later it did the same thing
Customer reply replied 2 years ago
After the relearn process with the vac scanner it came up with these codes, 17987,17579,17967,17950 all pointing to the throttle body. Should I bite the bullet and replace it?
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
if the throttle body is clean, and the relearn was done, then yes, the next step is to replace the throttle body,Tim
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Customer reply replied 2 years ago
Okay I ordered a new bosh throttle body it with be in tomorrow. Is there anything else I should do in the mean time?
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
Not really, just remember to relearn the throttle bdy once it is installed,Tim
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Customer reply replied 2 years ago
Okay I have vag scanner, my mechanic and I are confused on how to adjust the throttle body. How exactly do you do it. For example you scan the car go to engine o1 then what?
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
below is the procedure for using a VAG scanner,Tim
Turn the ignition on, but do not start the engine.
6. Clear all trouble codes.
7. Enter the Engine Address Word 01, Function 04 "Basic Settings".
8. The throttle basic settings are accomplished using one of 2 display groups. Display group 098 (in general, vehicles equipped with a throttle cable) and display group 060 (in general, full throttle by wire vehicles). Once the appropriate display group is entered, the adaptation process will begin. (NOTE: Entering the wrong display group will not start the adaptation process. Simply enter the other display group number).
9. Observe the 4th displayed field on the scan tool. It should read "ADP RUNS" and change to "ADP OK" after about 45 seconds (it may happen quicker than this, as well).
10. Once ADP OK is displayed, back out to the opening menu on the scan tool and turn the ignition off for 45 seconds.
11. Restart the vehicle normally. This completes the adaptation process. Test-drive the vehicle and verify that no codes reset and that the throttle operation is now normal.
Tech Tips:
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VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
Please dont forget to rte me , so I can get credit for helping, you can always come back to this question and ask follow up questions at no charge, thanks,Tim
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Customer reply replied 2 years ago
Trust me I will. We have to put the tb in on Monday or Tuesday I'll let you know how it goes
Customer reply replied 2 years ago
Unfortunately I cannot put throttlebody until Wednesday of this week so I will let you know then what happens thank you. Tyler
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
Let me know,Tim
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Customer reply replied 2 years ago
I put the new throttle body in, and now there is no epc light or traction control light. But the check engine light came on and it read p0507, p0171, p0174 and there are no vac leaks confirmed via smoke test. So what could be the problem?
Customer reply replied 2 years ago
I saw on the scanner there is an idle speed adjusted option. Should I adjust it? If so what should the value be?
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
Did you follow the steps above exactly to relearn it?
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Customer reply replied 2 years ago
Yes I did
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
did you use the display group 98 or the display group 60 to relearn?
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Customer reply replied 2 years ago
Group 60
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
does your have the trhottle cable, of fly by wire?
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Customer reply replied 2 years ago
I'm not sure. But what is the stock idle speed?
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
YOU NEED TO KNOW IF IT HAS A THROTTLE CABLE, OR IS FLY BY WIRE, IF YOU READ THE INSTRUCTIONS FOR RELEARNING, YOU USE THE GROUP 60 FOR FLY BY WIRE AND GROUP 98 FOR CABLE?????
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Customer reply replied 2 years ago
It's fly by wire
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
ok, when you did the relearn, and you went into the grooup 60, did it change from "ADP RUN" to "ADP OK" ?
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Customer reply replied 2 years ago
Yes I did. What else do you think is the problem?
VW Mechanic: Tim Mohr, ASE MASTER TECH replied 2 years ago
if it changed from run to ok, then it relearned it, did you clear the codes before relearnig it?
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Customer reply replied 2 years ago
Yes I cleared the codes.
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Tim Mohr
Tim Mohr
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