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trip permit
2010.12.06, 18:37 PM
4 Faults Found:
16502 - Engine Coolant Temp. Sensor (G62): Signal too High
P0118 - 35-10 - - - Intermittent
16795 - Secondary Air Injection System: Incorrect Flow Detected
P0411 - 35-10 - - - Intermittent
19497 - Powertrain Databus Implausible Engine Temp. Message from Inst. Panel
P3041 - 35-10 - - - Intermittent
16804 - Catalyst System: Bank 1: Efficiency Below Threshold
P0420 - 35-00 - -


So these lovely codes popped up tonight while driving my mk4... It took about 200 miles before they came on after first started after I installed a new battery/coil pack. Where should I start I guess? :crap::facepalm:

unimogken
2010.12.06, 19:03 PM
Crappy!
Sorry i'm not much help here but I hope its an easy fix!

trip permit
2010.12.06, 19:18 PM
One of the hoses popped off on the secondary air after putting in the coil pack... The clip didn't fasten all the way.. So I am hoping thats why the SAI code is there. I am going to swap out the coolant temp sensor because they are only like $11 for a new one...

Rabbit 16v
2010.12.06, 20:01 PM
A fantastic helpful hint would be to know details about the car in question!

DowNnOutDubin
2010.12.06, 20:03 PM
Seems like your on the right track starting with the coolant temp sender. Hopefully fixing the 2ndary air injection hose will help your catalyst code :beer:

Does the car show it's getting up to temperature?

trip permit
2010.12.06, 21:22 PM
Car is a 2002 VW Jetta GL 2.0L.

Car goes up to half way like it should and fans kick on like normal as well.

trip permit
2010.12.10, 10:29 AM
So off and on the temp guage doesn't register however if I turn the car off and the back on it will register. Does the cts send a signal to the cluster?

Arsigi
2010.12.10, 14:12 PM
I think I've replaced (or repaired) every part of the SAI system on my Golf. The stock vacuum lines are crap... the rivets that hold the pump together are crap... the solenoid and combi valve both like to fail... and they all seem to generate that same error code. What fun! :P At least you probably have that one taken care of.

trip permit
2010.12.10, 15:24 PM
I am hoping the CEL for SAI was cause the hose popped off... It sounded pretty cool, almost like a rocket was about to take off.

Rabbit 16v
2010.12.10, 18:00 PM
So off and on the temp guage doesn't register however if I turn the car off and the back on it will register. Does the cts send a signal to the cluster?

Yes, sir. you need a CTS.


I think I've replaced (or repaired) every part of the SAI system on my Golf. The stock vacuum lines are crap... the rivets that hold the pump together are crap... the solenoid and combi valve both like to fail... and they all seem to generate that same error code. What fun! :P At least you probably have that one taken care of.

Welp, looks like you are going to need the relay soon :p

DowNnOutDubin
2010.12.10, 18:07 PM
I'm getting ready to pull my 2ndary air :D

joel
2010.12.10, 19:55 PM
mk4's :(

trip permit
2010.12.10, 20:15 PM
Yes, sir. you need a CTS.

Have a new one to install this weekend.

SAPPERSVDUB
2010.12.12, 20:25 PM
delete the SAI system. Cleans up your bay quite a bit!

trip permit
2010.12.15, 10:22 AM
200+ miles now and until today, no CEL... Got this one:

VAG-COM Version: Release 311.2-N

Control Module Part Number: 06A 906 032 FR
Component and/or Version: 2.0l R4/2V G 4070
Software Coding: 00003
Work Shop Code: WSC 00066
Additional Info: 3VWSK69M92M050677 VWZ7Z0A3945304
1 Fault Found:
16804 - Catalyst System: Bank 1: Efficiency Below Threshold
P0420 - 35-00 - -


I know there is an exhaust leak, but I am suspecting o2... At least I got it through emissions yesterday. :(

Rabbit 16v
2010.12.15, 15:08 PM
26 07 06

Sept. 13, 2007

2010271 Supersedes T.B. Group 26 number 07 01 dated Feb. 9, 2007 due to the removal of 2001-2003 2.0L (AVH, AZG, BDC) engines.



Vehicle Information

Condition

Catalytic Converter, Replacement Guidelines



Catalyst efficiency faults stored in memory (See DTC table).

Technical Background

Guidelines for catalytic converter replacement

Production Solution

No production change required.

Service

Tip:

Oil level MUST be correct, if overfilled, level should be adjusted to the proper level prior to performing procedure.

Adjusting oil level is NOT covered by Warranty.

Exhaust system damage from outside influences is NOT covered by Warranty.

The following steps are to be followed before replacement of catalytic converters.

Inspect complete exhaust system for broken or missing components, loose clamps, etc. Repair as necessary.

If vehicle has MIL ON, investigate fault memory without erasing codes.

Before performing any repair, make a print out of fault memory including:

Address 01 fault memory (including ECM information)

Address 01 Measuring Value Block 46 (and 47, if applicable)

Tip:

For 4 bank systems such as Phaeton W12, Display groups 46 and 47 must be printed out from addresses 01 and 11.

OBD freeze-frame mode 2, and 6.

Tip:

For OBD, see Repair Manual - Fuel Injection & Ignition 2.0 Liter 4yl. 2V Generic Scan Tool Engine Code(s). AEG, BBW, BEV, ST-Generic Scan Tool

Steps for printing OBD from the touch screen:

Select "OBD".

Select "mode 2".

Select all PIDS displayed (use scroll bar if necessary).

Select right arrow key to display results.

Select "print", and then save result.

Save results for modes 2 and 6.

Print - self diagnosis log.

DO NOT replace catalyst if software updates related to catalyst are available. Check for applicable Technical Bulletins or Campaigns.

Perform any applicable software updates available through Technical Bulletins or Campaigns.

If other faults related to fuel mixture, oxygen sensor or misfire are present:

DO NOT replace catalyst(s).

Correct condition, erase DTCs, reset readiness codes and monitor measured value block (MVB) in 46, 47 until complete ("Test OK or Test n OK").

If after repair of other faults, diagnostic result in MVB 46 (and 47, if applicable) is/are OK:

DO NOT replace catalyst(s).

If after repairing other fault codes and setting readiness code, and any fault codes in the table return:

Replace catalyst(s) as necessary, using applicable SRTs.



If software updates do not apply, and only one or more of the following fault codes (DTCs) are present (see table):

If DTC text indicates bank 2, bank 3, bank 4:

Verify catalyst location before replacement, see Service Manual repair group 26. Use applicable SRTs.

For technical assistance, select the "Technical Assistance" tab in ElsaWeb and follow the instructions to obtain a 6 digit pin.

Tip:

Before repairing vehicle or erasing fault codes (DTCs) remember to make print-outs including freeze-frame data as required and attach to the repair order.

If catalytic converter is on parts submission, attach copies of all supporting documentation (including printouts) required when sending parts to Warranty Test Center.



Warranty

Required Parts and Tools

When replacing any catalyst, your VIN may be required to ensure the correct part is ordered (check with your parts department).

No Special Tools required.

Additional Information

All part and service references provided in this Technical Bulletin are subject to change and/or removal.

Always check with your Parts Dept. and Repair Manuals for the latest information.

joel
2010.12.15, 19:46 PM
good stuff :thumbup:

Rabbit 16v
2010.12.15, 21:33 PM
Sorry. I tried to copypasta the tables but it didnt work. If you need them, I can post them.

jity86
2010.12.21, 11:06 AM
most p0420 codes are because of a faulty converter, what was wrong with the coilpack? did it have a missfire for a while? missfires are a converters worst enemy.

trip permit
2010.12.21, 12:05 PM
coil pack had 2 visible cracks... could see it arching when trying to start.

jity86
2010.12.21, 12:36 PM
did your car throw any missfire codes with the faulty coil? I would address the exhaust leak first. An exhaust leak before the cat would be a more likely cause that the o2 sensors.

trip permit
2010.12.21, 12:40 PM
I got the car the day before I replaced the coil pack... History on the car is pretty unknown. I have a feeling there are a few leaks, just haven't gotten under and looked. Trying to get the registration part figured out first...

joel
2010.12.22, 16:14 PM
some how I still forget that replacing coilpacks is a part of life with these cars :screwy: