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    Thread: 2002 Jetta MK4 - AZG - help with emissions codes 16804, 17704 (scan included)

    1. 04-25-2012 03:24 PM #1
      I finally received the dreaded notice from the Illinois State emissions test, for my 2002 Jetta. It has had a CEL for a while now, however it's been running great so I haven't really spent any energy trying to get it fixed. Of course it failed the test, so I have a couple months to get things fixed so I can renew the plates.

      Here is the last Auto-Scan I collected, which shows the two codes in question -- any help diagnosing and repairing these is greatly appreciated.

      Thanks!

      =========================

      Saturday,03,March,2012,13:44:19:23346
      VCDS Version: Release 11.11.2
      Data version: 20120126



      --------------------------------------------------------------------------------
      --------------------------------------------------------------------------------


      Chassis Type: 9M - VW Jetta IV
      Scan: 01 02 03 08 09 15 16 17 19 22 29 35 36 37 39 46 47 55 56 57
      75 76

      VIN: 3VWRB69M12M022483 Mileage: 169360km/105235miles
      -------------------------------------------------------------------------------
      Address 01: Engine Labels: 06A-906-032-AZG.clb
      Part No: 06A 906 032 FP
      Component: 2.0l R4/2V 4072
      Coding: 00003
      Shop #: WSC 00066
      VCID: 71E3D7B03BB23BB
      3VWRB69M12M022483 VWZ7Z0A3834624

      2 Faults Found:
      16804 - Catalyst System; Bank 1
      P0420 - 35-00 - Efficiency Below Threshold
      17704 - Error in Mapped Cooling System (check Temp-Sensor and Thermostat)
      P1296 - 35-00 -
      Readiness: 0000 0000

      -------------------------------------------------------------------------------
      Address 02: Auto Trans Labels: 01M-927-733.lbl
      Part No: 01M 927 733 KQ
      Component: AG4 Getriebe 01M 4892
      Coding: 00000
      Shop #: WSC 00000
      VCID: 89131F50B322E3B

      No fault code found.

      -------------------------------------------------------------------------------
      Address 03: ABS Brakes Labels: 1C0-907-37x-ABS.lbl
      Part No: 1C0 907 379 C
      Component: ABS FRONT MK60 0103
      Coding: 0004097
      Shop #: WSC 00048 551 00000
      VCID: 2A5100DC86E4083

      No fault code found.

      -------------------------------------------------------------------------------
      Address 15: Airbags Labels: 6Q0-909-605-VW5.lbl
      Part No: 6Q0 909 605 F
      Component: 04 AIRBAG VW6 0202 0004
      Coding: 12340
      Shop #: WSC 00066
      VCID: 3A71309C2644B83

      1 Fault Found:
      00532 - Supply Voltage B+
      07-10 - Signal too Low - Intermittent

      -------------------------------------------------------------------------------
      Address 17: Instruments Labels: 1J0-920-xx5-17.lbl
      Part No: 1J0 920 906 K
      Component: KOMBI+WEGFAHRSP VDO V58
      Coding: 07232
      Shop #: WSC 02131
      VCID: 306512B4F038723
      3VWRB69M12M022483 VWZ7Z0A3834624

      No fault code found.

      -------------------------------------------------------------------------------
      Address 19: CAN Gateway Labels: 6N0-909-901-19.lbl
      Part No: 6N0 909 901
      Component: Gateway K<->CAN 0001
      Coding: 00006
      Shop #: WSC 00066
      VCID: F0E552B4B0B8B23

      No fault code found.

      -------------------------------------------------------------------------------
      Address 35: Centr. Locks Labels: 1C0-962-258-III.lbl
      Part No: 1C0 962 258 AC
      Component: 21 Zentr.Verriegel. 0003
      Coding: 00018
      Shop #: WSC 00066
      VCID: 68D5BAD40868FA3

      2 Faults Found:
      00928 - Locking Module for Central Locking; Front Driver Side (F220)
      54-10 - Incorrectly Equipped - Intermittent
      01044 - Control Module Incorrectly Coded
      35-00 - -

      -------------------------------------------------------------------------------
      Address 56: Radio Labels: 1J0-035-18x-56.lbl
      Part No: 1J0 035 180 D
      Component: RADIO 3CP 0002
      Coding: 02401
      Shop #: WSC 00066
      VCID: 2045E2F4A0D8C23

      No fault code found.

      End ---------------------------------------------------------------------

    2. 04-25-2012 05:05 PM #2
      THIS POST MOVED/VACATED BY JACK TO PROTECT CONTENT FALLING INTO THE GAPING HOLE OF THE VORTEX
      Last edited by Jack@European Parts; 07-30-2014 at 03:28 PM.
      Jack Shapiro E.P.E. VAS>ASE Extern VST-3/1 LAB (TECH INQUIRIES ARE TO BE IN WRITING )
      7076062 NYS DMV SAE>NASTF>VW-Audi GEKO Authorized
      European Parts Emporium/Performance --- Immobilizer Solutions LLC --------
      Postadresse: 1001 State Route 17K Montgomery New York 12549 USA
      vwemporium@aol.com -845-457-9808 TEL 9AM-5PM --------TAKE CONTROL OF WHAT YOU OWN!!!!!!

    3. 04-25-2012 05:39 PM #3
      Thanks for the quick reply -

      could you explain what you mean by:

      "verify amplitude in VCDS 01-04-046"

      Thanks -

    4. 04-25-2012 05:49 PM #4
      THIS POST MOVED/VACATED BY JACK TO PROTECT CONTENT FALLING INTO THE GAPING HOLE OF THE VORTEX
      Last edited by Jack@European Parts; 07-30-2014 at 03:28 PM.
      Jack Shapiro E.P.E. VAS>ASE Extern VST-3/1 LAB (TECH INQUIRIES ARE TO BE IN WRITING )
      7076062 NYS DMV SAE>NASTF>VW-Audi GEKO Authorized
      European Parts Emporium/Performance --- Immobilizer Solutions LLC --------
      Postadresse: 1001 State Route 17K Montgomery New York 12549 USA
      vwemporium@aol.com -845-457-9808 TEL 9AM-5PM --------TAKE CONTROL OF WHAT YOU OWN!!!!!!

    5. 04-25-2012 09:59 PM #5
      I reran a new auto-scan this evening, as well as several of the standalone tests. Here is the log, with the tests at the end:

      ======================


      Wednesday,25,April,2012,20:25:36:23346
      VCDS Version: Release 11.11.3
      Data version: 20120401



      --------------------------------------------------------------------------------
      --------------------------------------------------------------------------------


      Chassis Type: 9M - VW Jetta IV
      Scan: 01 02 03 08 09 15 16 17 19 22 29 35 36 37 39 46 47 55 56 57
      75 76

      VIN: 3VWRB69M12M022483 Mileage: 170930km/106210miles
      -------------------------------------------------------------------------------
      Address 01: Engine Labels: 06A-906-032-AZG.clb
      Part No: 06A 906 032 FP
      Component: 2.0l R4/2V 4072
      Coding: 00003
      Shop #: WSC 00066
      VCID: 71E3D7B03BB23B1
      3VWRB69M12M022483 VWZ7Z0A3834624

      2 Faults Found:
      16804 - Catalyst System; Bank 1
      P0420 - 35-00 - Efficiency Below Threshold
      17704 - Error in Mapped Cooling System (check Temp-Sensor and Thermostat)
      P1296 - 35-10 - - Intermittent
      Readiness: 0000 0000

      -------------------------------------------------------------------------------
      Address 02: Auto Trans Labels: 01M-927-733.lbl
      Part No: 01M 927 733 KQ
      Component: AG4 Getriebe 01M 4892
      Coding: 00000
      Shop #: WSC 00000
      VCID: 89131F50B322E31

      No fault code found.

      -------------------------------------------------------------------------------
      Address 03: ABS Brakes Labels: 1C0-907-37x-ABS.lbl
      Part No: 1C0 907 379 C
      Component: ABS FRONT MK60 0103
      Coding: 0004097
      Shop #: WSC 00048 551 00000
      VCID: 2A5100DC86E4089

      No fault code found.

      -------------------------------------------------------------------------------
      Address 15: Airbags Labels: 6Q0-909-605-VW5.lbl
      Part No: 6Q0 909 605 F
      Component: 04 AIRBAG VW6 0202 0004
      Coding: 12340
      Shop #: WSC 00066
      VCID: 3A71309C2644B89

      1 Fault Found:
      00532 - Supply Voltage B+
      07-10 - Signal too Low - Intermittent

      -------------------------------------------------------------------------------
      Address 17: Instruments Labels: 1J0-920-xx5-17.lbl
      Part No: 1J0 920 906 K
      Component: KOMBI+WEGFAHRSP VDO V58
      Coding: 07232
      Shop #: WSC 02131
      VCID: 306512B4F038729
      3VWRB69M12M022483 VWZ7Z0A3834624

      No fault code found.

      -------------------------------------------------------------------------------
      Address 19: CAN Gateway Labels: 6N0-909-901-19.lbl
      Part No: 6N0 909 901
      Component: Gateway K<->CAN 0001
      Coding: 00006
      Shop #: WSC 00066
      VCID: F0E552B4B0B8B29

      No fault code found.

      -------------------------------------------------------------------------------
      Address 35: Centr. Locks Labels: 1C0-962-258-III.lbl
      Part No: 1C0 962 258 AC
      Component: 21 Zentr.Verriegel. 0003
      Coding: 00018
      Shop #: WSC 00066
      VCID: 68D5BAD40868FA9

      1 Fault Found:
      00928 - Locking Module for Central Locking; Front Driver Side (F220)
      54-10 - Incorrectly Equipped - Intermittent

      -------------------------------------------------------------------------------
      Address 56: Radio Labels: 1J0-035-18x-56.lbl
      Part No: 1J0 035 180 D
      Component: RADIO 3CP 0002
      Coding: 02401
      Shop #: WSC 00066
      VCID: 2045E2F4A0D8C29

      No fault code found.

      End ---------------------------------------------------------------------
      Wednesday,25,April,2012,20:35:35:23346
      VCDS Version: Release 11.11.3
      Data version: 20120401


      Address 01: Engine (06A 906 032 FP)

      20:35:14 Group 034: Lambda Control (Aging Check: Bank 1 Sensor 1)
      760 /min Engine Speed (G28)
      490.0°C Catalytic Converter Bank 1 Temp.
      1.718 Dynamic Factor Bank 1 Sensor 1
      B1-S1 OK Result Lambda Aging

      --------------------------------------------------------------------------------
      --------------------------------------------------------------------------------


      Address 01: Engine (06A 906 032 FP)

      20:36:05 Group 036: Lambda Control (Sensor Readiness - After Catalyst)
      0.755 V Sensor Voltage Bank 1 Sensor 2
      B1-S2 OK Result Lambda Availability
      Bin. Bits
      Bin. Bits

      --------------------------------------------------------------------------------
      --------------------------------------------------------------------------------


      Address 01: Engine (06A 906 032 FP)

      20:37:28 Group 046: Lambda Control (Catalytic Conversion Test Bank 1)
      760 /min Engine Speed (G28)
      525.0°C Catalytic Converter Bank 1 Temp.
      0.50 Catalytic Conversion Bank 1
      Cat B1 Not OK Cat. Conversion Test Bank 1

      --------------------------------------------------------------------------------
      --------------------------------------------------------------------------------


      Readiness Status: 0000 0000
      Exhaust Gas Recirculation: Passed
      Oxygen Sensor Heating: Passed
      Oxygen Sensor(s): Passed
      Air Conditioning: Passed
      Seconday Air Injection: Passed
      Evaporative Emissions: Passed
      Catalyst Heating: Passed
      Catalytic Converter(s): Passed

    6. 04-25-2012 10:05 PM #6
      THIS POST MOVED/VACATED BY JACK TO PROTECT CONTENT FALLING INTO THE GAPING HOLE OF THE VORTEX
      Last edited by Jack@European Parts; 07-30-2014 at 03:29 PM.
      Jack Shapiro E.P.E. VAS>ASE Extern VST-3/1 LAB (TECH INQUIRIES ARE TO BE IN WRITING )
      7076062 NYS DMV SAE>NASTF>VW-Audi GEKO Authorized
      European Parts Emporium/Performance --- Immobilizer Solutions LLC --------
      Postadresse: 1001 State Route 17K Montgomery New York 12549 USA
      vwemporium@aol.com -845-457-9808 TEL 9AM-5PM --------TAKE CONTROL OF WHAT YOU OWN!!!!!!

    7. 04-28-2012 09:29 AM #7
      I'm going to do the ECT and the stat today, hopefully that will get me part of the way there.

    8. 04-29-2012 03:20 PM #8
      ECT and thermostat replaced yesterday --

      The job was easier than I thought in some respects, and much more difficult than I thought in others.

      1) The ECT is trivial to remove/replace. My car already had the newer "green" sensor but I replaced it, the o-ring and the clip anyway. The old o-ring was cracked and looked pretty bad off.

      2) The thermostat was another story. It didn't help that I started off wasting about an hour removing the wrong housing -- I initially removed the housing on the drivers side of the engine, where the ECT was, thinking it was the thermostat housing. Once I got it off, I quickly realized that it was not the right one. I got it back on but it was a b**ch to get the bottom stud threaded and in place.

      After that debacle I quickly realized where the correct thermostat housing was, and spent quite a while scratching my head trying to figure out how to get the bottom bolt out. I looked at several threads which say "you don't have to remove the alternator". Finally, a trip to Sears for a 1/4" u-joint was the ticket. Once I used the socket to break it loose, I reached in with my fingertips to slowly unscrew the bolt about 1/8 turn at a time until it was out. The top bolt was relatively easy to get out. As I had already drained the radiator, very minimal coolant came out when I removed the stat. When putting the housing back on, putting the bottom bolt in was very difficult, again b/c of minimal clearance. I used my fingertips to get it started and at the very end was able to get the socket back on to snug it up.

      Refilled the coolant, checked for leaks, good to go!

      Today I ran VAG-COM again and cleared the codes, I'll see what happens in a day or two.

    9. 06-18-2012 07:39 PM #9
      Just a quick followup -- I finally replaced the catalytic converter (manifold back) and the rear O2 sensor (the old one was frozen into the original pipe) -- after a couple drive cycles everything is clear, MIL is off and I passed the IL state emissions inspection!

      Thanks to everyone for your help.

      On to the next problem, I have developed a medium-slow coolant leak, I'm thinking it's probably the coolant flange, but might be the thermostat housing since I had them both off. I guess that's another afternoon project sometime when it's not too hot outside :-)

    10. Junior Member Keithuk's Avatar
      Join Date
      Nov 17th, 2009
      Location
      Stoke on Trent, England
      Posts
      51
      Vehicles
      2010 Golf GTD (170)
      06-21-2012 12:09 PM #10
      VAG Error Code: 16804
      EOBD II Error Code: P0420

      Fault Location:
      Catalytic Converter System, Bank 1 - Efficiency Below Threshold

      Possible Cause:
      Leakage in Intake and/or Exhaust System.
      Catalyst faulty.
      Oxygen Sensor(s) faulty.
      Oxygen Sensor(s) Control faulty.

      Possible Solutions:
      Check Intake and Exhaust System for Leaks.
      Check Catalyst.
      Check Oxygen Sensor(s).
      Check Oxygen Sensor(s) Control.
      Perform Oxygen Sensor(s) Aging Check.

      Special Notes:
      For 1.8T's experiencing this fault code, this thread may be useful: Aftermarket DP/Cat -DTC - Cat efficiency below threshold - Who has this DTC and wich DP/Cat

      VAG Error Code: 17704
      EOBD II Error Code: P1296

      Fault Location:
      Error in Mapped Cooling System

      Possible Cause:
      Cold start issues.

      Coolant Temperature Sensor (G62) faulty.
      Coolant Thermostat faulty.

      Possible Solutions:
      Check Coolant Temperature Sensor (G62).
      Check Coolant Thermostat.

      Special Notes:
      Check the stored Freeze Frame data with this fault code. Freeze Frame information will be found in the fault code description (if the module supports it) or in Generic OBD-II if the vehicle complies with those regulations.
      Freeze Frame data stored at -40*C is generally an indication of a faulty ECT or wiring.
      Freeze Frame data stored at +140*C is generally an indication of a faulty ECT or wiring.
      Freeze Frame data stored with in the 68*C ~ 80*C range is an indication that the vehicle was close to, but not within, the cooling systems normal operation range. The Thermostat itself or Cooling system components may be at fault.

      VAG Error Code: 00532
      EOBD II Error Code: P1750

      Fault Location:
      Supply Voltage B+ - Signal too Low

      Possible Cause:
      Wiring/Connectors from/to Control Module faulty.
      Power Supply (Battery/Generator) faulty.

      Possible Solutions:
      Check/Repair Wiring/Connectors from/to Control Module.
      Check Power Supply (Battery/Generator).

      Special Notes:
      When found in an individual control module, it's most likely a local source (e.g. wiring/connectors).
      When found in multiple control modules at the same time, it's most likely a common source (e.g. earth spot, battery, generator).
      Intermittent codes are often stored during low outside temperature when the battery capacity goes down and may be ignored.
      Common with 16946/P0562/001378 - System Voltage: Too Low stored in other control modules.

      VAG Error Code: 00928

      Fault Location:
      Locking Module for Central Locking; Front Drivers Side (F220) - Implausible Signal

      Possible Cause:
      Door Locks not working properly.

      Wiring/Connectors from/to Locking Module for Central Locking; Front Driver Side (F220) faulty.
      Voltage Supply for Locking Module for Central Locking; Front Driver Side (F220) faulty.
      Door Lock Mechanics are stiff/partially seized.
      Locking Module for Central Locking; Front Driver Side (F220) faulty.

      Possible Solutions:
      Check Wiring/Connectors from/to Locking Module for Central Locking; Front Driver Side (F220).
      Check Voltage Supply for Locking Module for Central Locking; Front Driver Side (F220).
      Check Door Lock Mechanics/Operation.
      Check Locking Module for Central Locking; Front Driver Side (F220).

      VAG Error Code: 01044

      Fault Location:
      Control Module - Incorrectly Coded

      Possible Cause:
      Reduced Functionality.

      Control Module incorrectly coded.

      Possible Solutions:
      Check Gateway Installation List.
      Check/Fix Control Module Coding.
      See Vehicle Specific Diagnostic Procedures for Details.

      Special Notes:
      When found in CAN-Gateway,
      On a Long Coded module, use the Gateway Installation List to check for unreachable or not registered control modules. Then update the Gateway [Installation List] by altering the Gateway Coding manually.
      On a Short Coded modules, refresh the original coding with the same value. For example, code it from 00006 -to- 00006 without making an actual change.
      When found in the Comfort System on the VW New Beetle/Cabriolet (1C/1Y/9C) this may be a bug in the module that will be resolved by refreshing the coding with the same value as described above with the CAN Gateway example.
      Golf GTD (170) 2010, 5 Door, Shadow Blue, Flat Tyre Indicator, Service Plan, Basic Protection Pack + VCDS.

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