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1.6 TDI CAYC engine running on only 3 cylinders

 
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chli1976
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Post17-06-2017, 16:43    Subject: 1.6 TDI CAYC engine running on only 3 cylinders Quote

The following error has been saved.

Wednesday, June 14, 2017, 18:06:08:40163
VCDS - A VAG/VAS emulator based on Windows, running on Windows 7 x64.
VCDS Version: DRV 17.1.3.0 HEX-NET CB: 0.4341.4
Data as of: 20170508 DS267.9
http://shop.dieselschrauber.de


Vehicle Identification Number (VIN): VSSZZZ5PZBR009636 License plate:
Mileage: 152,430 km. Repair order:


Vehicle type: 5P (7N0)
Scan: 01 03 08 09 15 16 17 19 25 42 44 46 52 56

Vehicle Identification Number (VIN): VSSZZZ5PZBR009636. Mileage: 152,430 km.

01-Motor electronics -- Status: Error 0010.
03-Brake electronics -- Status: OK 0000
04-Steering angle sensor -- Status: OK 0000
08-Climate control/heating unit - Status: OK.
09-Central Electrical System -- Status: Error 0010.
15-Airbag -- Status: OK 0000
16-Wheel steering electronics -- Status: OK 0000
17-Terminal block insert -- Status: OK 0000
19-Diagnosis interface -- Status: OK 0000.
Immobilizer system -- Status: OK 0000
42-door electric driver -- Status: OK 0000
Steering assist - Status: OK 0000.
46-Comfort System -- Status: OK 0000
52-door electric passenger door - Status: OK 0000.
56-Radio -- Status: OK 0000
"Die Sonne scheint hell und warm. Die Vögel zwitschern fröhlich in den BÀumen. Ein leichter Wind weht durch das Feld und lÀsst das Gras sanft wiegen. Es ist ein wunderschöner Tag."

The sun is shining brightly and warmly. The birds are chirping happily in the trees. A gentle breeze blows through the field, causing the grass to sway softly. It's a beautiful day.
Address 01: Engine Control Module (J623-CAYC)
Label file: DRV\03L-906-023-CAY.clb
Part number SW: 03L 906 023 AB. Part number HW: 03L 906 023 GG.
Part: R4 1.6L TDI H23 9979
Revision: --H23--- Serial Number:
Encoding: 00114014030400080000
Operating number: WSC 99999 1023 2097151.
ASAM Dataset: EV_ECM16TDI02103L906023AB 003013
ROD: EV_ECM16TDI02103L906023DB.rod
VCID: E680F07519FBAE71F3-80B2

"One error found:"
9840 - Fuel injector, cylinder 4 (N33)
P0204 00 [175] - Electrical circuit fault.
Warning light ON - confirmed - checked since last reset.
Environmental conditions:
Error status: 00000001
Error priority: 2
Error frequency: 1.
Mileage: 152,408 km
Date: 2017.06.14
Time: 16:04:40

Motor speed: 2731.25 RPM.
Normalized load value: 6.7%
Vehicle speed: 73 km/h
Coolant temperature: 89 °C.
Intake air temperature: 40 °C
Atmospheric pressure: 980 millibars.
Voltage at terminal 30: 13.892 V.
Lost learning counter via OBD: 40.
Error information regarding the selected piezo power level: LF_STATE_PPS_SPI[0]: 0.
Fuel injector 3: Capacitance - CAPA_INJ_MAIN[2]: 29.1330 ”F
Main injection voltage for cylinder 3: 1488.0 ”As.
Measured energy of the main injection, cylinder 3: 37.995 mJ.
Supply voltage for analog output 1 (VCC_1): 5.00 V.
Supply voltage of analog output 2-VCC_2: 4.97 V.
Fuel injector 3: Voltage - V_INJ_MAIN[2]: 51.07 V.

Readiness: 1 1 0 0 0

Then I moved the cables from cylinder 4 to cylinder 3, and from cylinder 3 to cylinder 4.

New error.

9839 - Fuel injector, cylinder 3 (N32)
P0203 00 [101] - Electrical fault in the circuit.
Unconfirmed - checked since last deletion.
Environmental conditions:
Error status: 00000001
Error priority: 2
Error frequency: 1.
Mileage: 152,431 km
Date: 2017.06.14
Time: 18:32:29

Motor speed: 865.50 rpm.
Normalized load value: 23.5%
Vehicle speed: 0 km/h
Coolant temperature: 76 °C
Intake air temperature: 41 °C.
Atmospheric pressure: 980 millibars.
Voltage at terminal 30: 12.085 V.
Lost learning counter via OBD: 40.
Error information regarding the selected piezo power level: LF_STATE_PPS_SPI[0]: 0.
Fuel injector 2: Capacitance - CAPA_INJ_MAIN[1]: 32.1019 ”F
Main injection charge voltage cylinder 2: 1470.9 ”As.
Measured energy of the main injection for cylinder 2: EGY_INJ_MAIN[1]: 3.183 mJ.
Supply voltage for analog output 1 (VCC_1): 5.00 V.
Supply voltage of analog output 2-VCC_2: 4.96 V.
Injector valve 2: Voltage - V_INJ_MAIN[1]: 4.34 V.

Also muss der Injektor Zyl. 4 einen Defekt haben. SteuergerÀt glaubt ja jetzt, dass der 4. der 3. It is a cylinder.

"Today I installed a used injector with the same part number. The injector was previously replaced by Volkswagen due to issues with nail problems, but it was working."

No more errors saved, but it's still running on 3 cylinders.

Fuel injection quantity deviation: The value jumps from 0.8 to a maximum of 1.5.

DE00365-ENG99400 Fuel injection quantity deviation, cylinder 1 - FAC_CYL_BAL1: 0.8531 mg/stroke.
IDE00366-ENG101187 Fuel injection quantity deviation, cylinder 2 - FAC_CYL_BAL2: -1.1388 mg/stroke.
IDE00367-ENG101684 Fuel injection quantity deviation, cylinder 3: FAC_CYL_BAL3, -0.9772 mg/stroke.
IDE00368-ENG103465 Fuel injection quantity deviation, cylinder 4 - FAC_CYL_BAL4, 0.8879 mg/stroke.

Then I checked the compression with an original tester. All cylinders were around 289 PSI when starting, which indicates that the compression is okay. However, I'm not sure how much to trust this reading since I don't have any mechanical tools for a more accurate measurement.
Then there's the oscilloscope (unfortunately not a digital one), with this result for all cylinders. I think that should also be correct.

I vaguely remember that the new injectors are supposed to be "pre-filled." Could it be that the used injector no longer has this "diesel cushion," and that's why it's not working properly?
I can only measure the return flow now, but I would need to build some adapters for that first.



CAYC.jpg
 Description:
 1.6 TDI CAYC engine running on only 3 cylinders
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CAYC.jpg

VCDS


Translated on 11-07-2026, 19:21.
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Post17-06-2017, 19:49    Subject: 1.6 TDI CAYC engine running on only 3 cylinders Quote

Hi,

I suspect that the injector in question is simply electrically faulty. Even if it was stored "dry," the pressure in the rail would have long since forced its way through.

Best regards, Rainer.


Translated on 11-07-2026, 19:40.
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chli1976
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Post17-06-2017, 23:15    Subject: 1.6 TDI CAYC engine running on only 3 cylinders Quote

Then it should register an error again. With the defective original parts, the light would immediately come on after being turned off and the engine running.

I still have 3 more and I'm going to try those as well.
VCDS


Translated on 11-07-2026, 19:41.
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Post17-06-2017, 23:33    Subject: 1.6 TDI CAYC engine running on only 3 cylinders Quote

Hi,

I've read your post again (carefully). So, I think we can agree that the replaced injector is electrically defective.
I thought your used injector (in cylinder 4) would give the same error message... so, if the used one doesn't throw any errors and is being controlled like the other three cylinders according to the oscilloscope, why is the engine still running on only three cylinders even though the idle speed control shows 0.8879 mg/stroke?

How did you arrive at the statement that it's running on only 3 cylinders – is this just when idling, or generally while driving?

How does the car perform above idle speed – is it delivering full power or not?

Best regards, Rainer.


Translated on 11-07-2026, 19:42.
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Post17-06-2017, 23:53    Subject: 1.6 TDI CAYC engine running on only 3 cylinders Quote

The new used car no longer has any issues.
The engine shakes violently when idling, and while driving, it lacks power and runs roughly, almost as if it's only running on three cylinders.
When accelerating, I also hear an unpleasant knocking sound. It's not the typical knocking that is common in many 1.6-liter engines.

What I also don't quite understand is that with a faulty injector on cylinder 4 (initial condition), I had these diagnostic trouble codes:

IDE00439-ENG102776 Injector valve 3: Capacity - CAPA_INJ_MAIN[2] 0.0000 ”F
IDE00440-ENG104221 Injector valve 4: Capacity - CAPA_INJ_MAIN[3] 6.9744 ”F
IDE03894-ENG104143 Fuel injector 2: Voltage - V_INJ_MAIN[1] 112.93 V
IDE03895-ENG101536 Injector valve 3: Voltage - V_INJ_MAIN[2] 0.00 V
IDE05636-ENG103475 Voltage charge of the main injection, cylinder 3: CHR_INJ_MAIN[2] = 0.0 ”As.
IDE05637-ENG101402 Voltage charge of the main injection, cylinder 4 - CHR_INJ_MAIN[3] 770.8 ”As
IDE05648-ENG103761 Measured energy of the main injection, cylinder 3: EGY_INJ_MAIN[2] = 0.000 mJ.
IDE05649-ENG100583 Measured energy of the main injection, cylinder 4: EGY_INJ_MAIN[3] = 42.589 mJ.

Why do I always get no readings from injector 3?

With new used items:

IDE00439-ENG102776 Injector valve 3: Capacitance - CAPA_INJ_MAIN[2] 5.9687 ”F
IDE00440-ENG104221 Injector valve 4: Capacity - CAPA_INJ_MAIN[3] 5.6606 ”F
IDE03895-ENG101536 Injector valve 3: Voltage - V_INJ_MAIN[2] 121.64 V
IDE03896-ENG102925 Fuel injector 4: Voltage - V_INJ_MAIN[3] 123.34 V
IDE05636-ENG103475 Voltage charge of the main injection, cylinder 3: CHR_INJ_MAIN[2] = 724.1 ”As.
IDE05637-ENG101402 Voltage charge of the main injection, cylinder 4: CHR_INJ_MAIN[3], 705.1 ”As.
IDE05648-ENG103761 Measured energy of the main injection, cylinder 3: EGY_INJ_MAIN[2] = 44.041 mJ.
IDE05649-ENG100583 Measured energy of the main injection, cylinder 4: EGY_INJ_MAIN[3] = 43.579 mJ.
VCDS


Translated on 11-07-2026, 19:47.
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Post18-06-2017, 9:41    Subject: 1.6 TDI CAYC engine running on only 3 cylinders Translating...

[Translating...]

Quote:
Was ich auch nicht ganz verstehe, mit defektem Injektor auf Zylinder 4 (Ausgangszustand) hatte ich diese MWB:

IDE00439-ENG102776 Einspritzventil 3: KapazitÀt-CAPA_INJ_MAIN[2] 0.0000 ”F
IDE00440-ENG104221 Einspritzventil 4: KapazitÀt-CAPA_INJ_MAIN[3] 6.9744 ”F
IDE03894-ENG104143 Einspritzventil 2: Spannung-V_INJ_MAIN[1] 112.93 V
IDE03895-ENG101536 Einspritzventil 3: Spannung-V_INJ_MAIN[2] 0.00 V

Fehler bei den Bezeichnungen der Zylinder entweder im MotorsteuergerÀt oder bei der Diagnose? Ehrlich gesagt, keine Ahnung.
Hat das Fahrzeug das Abgasupdate schon bekommen? Wenn ja, sollte der Softwarestand vom MotorsteuergerÀt ja leidlich aktuell sein.

Kein Saft, unrunder Lauf und Nagelm mit gebrauchtem Injektor:
Hast Du die Schaltzeiten der Injektoren untereinander schon verglichen?
Jetzt wĂ€re nicht schlecht im Thema AnsteuerdrĂŒcke und Schaltzeiten von Injektoren Werte von funktionierenden 1.6 TDIs zu haben. icon_confused.gif

Viele GrĂŒĂŸe, Rainer


Last edited on 18-06-2017, 9:43, edited 1 time in total.
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Post18-06-2017, 12:27    Subject: 1.6 TDI CAYC engine running on only 3 cylinders Translating...

[Translating...]

MĂŒssen nach Injektorentausch nicht die Korrekturwerte angepasst werden ?
Oder wurde das bereits gemacht, aber nicht im Text erwÀhnt ?
Gruß
Roger

MJ 2018 GTI Performance DLBA

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Post18-06-2017, 13:31    Subject: 1.6 TDI CAYC engine running on only 3 cylinders Translating...

[Translating...]

Schaltzeitabweichungen hab ich noch nicht kontrolliert, werde ich morgen machen.
Laut Softwarestand sollte er schon das Update bekommen haben.

Korrekturwerte wurden natĂŒrlich angepasst, glaube aber nicht, dass das solche Auswirkungen hĂ€tte.
VCDS


Last edited on 18-06-2017, 13:39, edited 1 time in total.
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Post18-06-2017, 20:58    Subject: 1.6 TDI CAYC engine running on only 3 cylinders Translating...

[Translating...]

Hab jetzt doch noch geschaut, in dem MWB`s finde ich keine Kalibrierwerte und auch keine Schaltzeitabweichung.

Habe jetzt, auch auf die Gefahr hin dass ich das SteuergerĂ€t abschieße, wĂ€hrend des Motorlaufs die Injektoren abgesteckt und 4 Zylinder arbeitet. Drehzahl-Unterschied an allen Zylindern fast gleich.
LĂ€uft dann so lange auf 3 Zylinder bis man den Fehlerspeicher wieder löscht oder einen ZĂŒndungswechsel macht.
Trotzdem hab ich beim Fahren das typische "auf 3 Zylinder laufen" GerĂ€usch/GefĂŒhl.
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Post18-06-2017, 22:15    Subject: 1.6 TDI CAYC engine running on only 3 cylinders Translating...

[Translating...]

Moin,
Quote:
Hab dann die Kabel vom 4. auf den 3. und vom 3. auf den 4. Zylinder gesteckt.

Der CAYC ist doch ein CR Motor(?). Mit dem Kabeltausch erreichst Du dann bei ZĂŒndfolge 1-3-4-2 bei #3 und #4 eine um jeweils 180° verschobene Einspritzung.
Ich wĂŒrde testweise den Injektor durchwechseln, aber nicht den (Steuer-)Anschluß. Hast Du LLR Werte?
hg
Herbert
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(+ Audi 80 Avant B4 1Z 475Tkm - habe ich vom ersten bis zum letzten Tag gerne gefahren)
(+ Passat Variant 32B CY 400Tkm)
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Post19-06-2017, 6:37    Subject: 1.6 TDI CAYC engine running on only 3 cylinders Translating...

[Translating...]

Mir ging es ja nur um herauszufinden ob es sich um einen Injektor oder um einen Kabelfehler handelt. Darum hab ich die Stecker mal vertauscht.

Hab ja jetzt einen anderen Injektor an Zyl. 4 eingebaut und es wird auch kein Fehler mehr abgelegt.

Mit LLR meinst du die Einspritzmengenabweichung? Hab ich im ersten Beitrag gepostet.
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Post20-06-2017, 21:23    Subject: 1.6 TDI CAYC engine running on only 3 cylinders Translating...

[Translating...]

Habe jetzt eine Kleinstmengenadaption gemacht, Motor lĂ€uft im LL jetzt normal, außer das Klacken vom ZMS, beim Beschleunigen bis ca. 1800 Umd. ein bisschen rauer als ich es von diesen Motoren kenne, eventuell das dass vom ZMS kommt.
VCDS
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