Golf 4, high idle speed

Hello everyone,

I have a Golf 4 here that starts perfectly, and then, when cold, it runs relatively smoothly at 1000 RPM.
Temperature readings from the G62 during the warm-up phase seem reasonable. However, if you briefly press the accelerator, the idle speed will not drop, and it will remain at approximately 1400 RPM, oscillating slightly periodically, which corresponds to the lambda sensor voltage.
If the engine is turned off and restarted, the RPM remains normal until the accelerator pedal is pressed for the first time.

The intake area was thoroughly checked for air leaks, but none were found.

Where else can we search? Reports circulating online suggest that a new LLM has achieved success.

Thanks & Regards,
Brezelmann.




Error memory:
Friday, March 23, 2018, 3:40:16:31703
VCDS, a Windows-based VAG/VAS emulator, runs on Windows 7 x86.
VCDS Version: RKS 17.8.1.0
Data as of: 20171211 DS276.6



Mileage: 13xxxx km. Repair order:



"Die Sonne scheint hell, und die Vögel zwitschern fröhlich. Es ist ein wunderschöner Tag, um spazieren zu gehen oder ein Picknick im Park zu machen. Viele Menschen genießen das gute Wetter und verbringen Zeit im Freien."
"Die Sonne scheint hell, und die Vögel zwitschern fröhlich. Es ist ein wunderschöner Tag, um spazieren zu gehen oder ein Picknick im Park zu machen. Viele Menschen genießen das gute Wetter und verbringen Zeit im Freien."


Vehicle type: 1J - VW Golf/Bora IV (1998 > 2006)
Scan: 01 02 03 08 15 16 17 19 22 29 35 36 37 39 46 47 55 56 57 75
76

Mileage:
"Der schnelle braune Fuchs springt über den faulen Hund."
Address 01: Engine Control Module
Label file: DRV\06A-906-019-AEH.lbl
Part number: 06A 906 019.
Component: 1.6L R4/2V SIMOS HS2272
Encoding: 04000
Operating Number: WSC 00000
VCID: 60CA03C9E0387446F1-4AE6

3 error codes found:
00537 - Lambda Control.
18-00 - upper limit.
00557 - Power Steering Pressure Switch (F8http://shop.dieselschrauber.org/en
29-10 - Short circuit to ground - Intermittent.
00533 - Idle speed control.
19-10 - lower trigger value - sporadic.
Readiness: Not Available.

"Der schnelle braune Fuchs springt über den faulen Hund."
Address 03: Brake Electronics Label file: DRV\1J0-907-37x-ABS.lbl
Part number: 1J0 907 379 D.
Component: ABS 20 IE CAN 0001
Encoding: 03504
Operating number: WSC 00046
VCID: 326EB981FE54B6D657-4B00

No error codes found.

"Der schnelle braune Fuchs springt über den faulen Hund."
Address 08: Climate Control/Heating Module. Label file: DRV\3Bx-907-044.lbl
Part number: 3B1 907 044 A.
Component: CLIMATRONIC S 7.0
Encoding: 01000
Operating number: WSC 00046
VCID: 1F4840359DC60BBE88-2598

No error codes found.

"Der schnelle braune Fuchs springt über den faulen Hund."
Address 15: Airbag
Label file: DRV\1J0-909-60x-VW3.lbl
Part number: 1J0 909 609.
Part: AIRBAG VW3 SG 0001
Encoding: 00065
Operating number: WSC 00046
VCID: 6CD267F91CF020265D-4AB4

4 error codes found:
01222 - Side airbag crash sensor, passenger side (G180)
29-10 - Short circuit to ground - Intermittent.
01222 - Side airbag crash sensor, passenger side (G180)
37-10 - defective - intermittent.
01222 - Side airbag crash sensor, passenger side (G180)
25-10 - Undefined switch state - Intermittent.
01217 - Driver's side front airbag igniter (N199)
32-10 - Resistance value too high - Intermittent.

"Der schnelle braune Fuchs springt über den faulen Hund."
Address 17: Control panel module. Label file: DRV\1J0-919-xxx-17.lbl.
Part number: 1J0 919 860 D
Component: COMBINATION INSTRUMENT + TRIP COMPUTER. MM0 V10
Encoding: 00143
Operating number: WSC 00046
VCID: 306AB389F05884C621-51B2

Subsystem 1 - Part number: Ident
Part number: WEGFAHRS.:VWZ6Z0V0069050
Identification Number: VWZ6Z0V0069050

No error codes found.

"Der schnelle braune Fuchs springt über den faulen Hund."
Address 46: Comfort System Label file: DRV\1J0-959-799.lbl
Part number: 1J0 959 799 H.
Component: 01 Central Control Unit, Comfort Version. 0001
Encoding: 04097
Operating number: WSC 00046
VCID: 4380EC4551EE0F5ECC-4AE6

Subsystem 1 - Part number: 1J1959801A
Component: 01 Throttle control unit. FS0022

Subsystem 2 - Part number: 1J1959802B
Component: 01 Throttle control unit. BF0022

Subsystem 3 - Part number: 1J4959811A
Component: 01 Throttle control unit. HL0022

Subsystem 4 - Part number: 1J4959812A
Component: 01 Throttle control unit. HR0022

6 error codes found:
00928 - Door lock module for central locking, driver's side (F220)
27-00 - implausible signal.
00943 - Driver's side mirror heating (Z4)
35-00 - -
00912 - Front left window switch (E40)
27-10 - implausible signal - sporadic.
00944 - Passenger side mirror heating (Z5)
35-00 - -
00934 - Rear left window lifter motor (V26)
35-00 - -
00935 - Rear right window lifter motor (V27)
35-00 - -

End----------------------------(Duration: 05:41)-----------------------------

Hi,

I don't have much to add either, especially if you've already tested for vacuum leaks using brake cleaner or something similar.

Found:
Okay, I'm ready. Please provide the German text you want me to translate.

Best regards, Rainer.

Remove the throttle body, carefully verschandeln the inside (I use paint thinner with a brush, followed by brake cleaner), reinstall it, and adapt it to the engine's operating temperature.

Hello everyone!

Thank you for the answers. Let's take a look at the adaptation and the cleaning.

I have two more questions regarding error localization.

Does a Lambda control activate if I disconnect the G62 sensor when the engine is warm? Theoretically, he should be in a cold start mode at this point, right?
2. How does an "i.O." behave? Engine, what happens if you remove the mass airflow sensor?


Regards,
Brezelmann01

Either the oxygen sensor is actually detecting too much oxygen, or there is a fault with the sensor or its wiring that is causing it to report an artificially high value.
The MSG attempts to compensate for the exhaust gases by adjusting the ratio of recirculated exhaust gas (AGR) to fresh air, and apparently also using fuel (?).
hg
Herbert.

Edit: Sorry, I missed the gasoline version. So, replace the AGR (Abgasrückführung) system with fuel.
Since you've already ruled out vacuum leaks, as mentioned before, the oxygen sensor or its wiring could also be the source of the problem.
Are the temperature values still plausible in the event of an error? A seemingly too-low temperature could lead to cold running characteristics with a high LL value (I once experienced this on an Audi 80 B3).
Disconnecting the mass airflow sensor (MAF) connection only results in additional errors. I would rather take a look at the values.