Turbo actuator sensor fault code.

turbocharged798 · Mar 13, 2011

This is on my BEW. A while ago the check engine light cam on and it threw a code for the turbo actuator feedback sensor. I cleared the code hoping it would not come back, but after 50miles the light came back on with the code.

Here's the code:

Sunday,13,March,2011,17:14:47:38256
VCDS Version: Release 10.6.1
Data version: 20100831

Address 01: Engine Labels: 038-906-016-BEW.lbl
Control Module Part Number: 038 906 016 H HW: 028 101 114 6
Component and/or Version: R4 1.9L EDC G000SG 5375
Software Coding: 0150031
Work Shop Code: WSC 00066 000 00000
VCID: 192701CCA9EB
1 Fault Found:
18996 - Turbocharger Boost Control Position Sensor Circuit: Signal too Low
P2564 - 000 - - - Intermittent
Freeze Frame:
RPM: 1386 /min
Torque: 78.0 Nm
Speed: 21.0 km/h
Temperature: 4.5°C
Voltage: 14.36 V
Lambda: 100.6 %
Lambda: -7.6 %

Readiness: 0 1 0 0 0

I guess I have to drop the belly pan and see what is going on. What are the odds the actual actuator is bad? I know you cannot buy them separately for the KP39 so I really hope it is not that!

Just wondering if any of our gurus have seen this before.

Seatman · Mar 13, 2011

It looks like you're not alone and #4 post has managed to fix his but only by replacing the turbo, I don't know if your turbo's the same though so you might be able to fix it cheaper.

http://forums.tdiclub.com/showthread.php?t=202759

turbocharged798 · Mar 13, 2011

Yeah I was afraid of that. I did a search and it seem like the wiring going to it can be a problem sometimes. Hopefully it is just a cut wire and not the actuator. I guess I got to crawl under the car and find out.

Seatman · Mar 13, 2011

So would that be this bit you need or is there other wiring going to the turbo itself?

http://www.idparts.com/catalog/product_info.php?products_id=530

turbocharged798 · Mar 13, 2011

That's for the ALH. The US spec PD100 (BEW) uses a Borg Warner KP39 turbo. It uses a feedback sensor on the actuator that tells the ECU where the position of the veins are. The problem is that the actuator is not available anywhere what so ever. You can, however, buy a replacement feedback actuator for Garrett turbos, but it will not work on the OEM KP39.

If my actuator is gone bad, look like I will be out of luck. If the wires going to the actuator is damaged, that would be a easy/cheap fix. Hopefully it's the wires.

Edit: Here is a smart actuator, but it only fits Garrett turbos.

http://www.idparts.com/catalog/product_info.php?products_id=2054

Seatman · Mar 13, 2011

Some new ideas don't seem like good ideas in my opinion. ryanp on here might be able to supply a second hand one, might be worth checking if need be.

73veedubya · Mar 13, 2011

ive had teh p2564 code going for a few months now...its just been way too cold and wet to crawl under to see whats going on

turbocharged798 · Mar 14, 2011

Got the car jacked up, pulled the belly pan, and started to check out the wires.

It was completely covered with split loom and some weird heat resistant wrap on the connector. So I pulled it all back and at first I couldn't find anything wrong. Then bam, two of the three wires are almost cut through. BINGO!

I am so glad it was not the actuator!!!!

Going to get some heat shrink crimps for a good waterproof seal. I still haven't fixed it yet. It really needs a flywheel replacement anyway. The DMF is getting quite bad so it's parked for now anyway.

Thanks guys.

PDJetta · Mar 14, 2011

Nice find!

Those feedback sensor wires are really flimsy. I wire tied mine for more support.

--Nate

Seatman · Mar 14, 2011

That's excellent man, good find and a fair bit cheaper to fix.

Turbo actuator sensor fault code.

turbocharged798

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