Question about 2002 Volkswagen Jetta TDI

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2002 vw jetta gls failed emission test obd codes P1780 and P2181

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Posted on Jan 02, 2017

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wracefans24
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SOURCE: 5 error cods on my 2002 Jetta GLS 1.8 Turbo Engine

P0420= Catalyst System Efficiency Below Threshold Bank 1
P0300=Random/Multiple Cylinder Misfire Detected
P0301=Cylinder 1 Misfire Detected
P0172=System Too Rich Bank 1
P2181=Cooling System Performance
you need to write these down,have someone clear the codes in the car,then go for short ride and recheck which if any code reappears.it's like domino's affect,one sensor can start a chain affect with the others.

Posted on Dec 10, 2009

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SOURCE: replacing ignition coil on a 2002 VW jetta 2.0 GLS

The secondary aux air pump needs to be removed in order to access the coil pack secured to the block. Remember the bolt for the coil needs to be torqued down to 7ft lb.

Posted on May 08, 2010

  • 496 Answers

SOURCE: i have a 2005 vw

p2181 = cooling system performance

p0068 = Throttle position sensor inconsistent with mass air flow sensor.

Posted on Feb 25, 2011

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2002 VW Golf emission warning light was on. In garage yesterday for repair - part replaced. Light on again to day! Any ideas.


The shop failed to properly diagnose the OBD Codes
or verify the repairs

I would guess there was no road test following any work,
or any scan tool data looked at,on a road test, or driven
long enough to have all the Emission Monitors run

Should have kept it a day & done a better job

Oct 18, 2014 | 2001 Volkswagen Golf

1 Answer

2000 volkswagon jetta 2.0 obd codes p0725,p1780,p1850


You can use vas 5054a to do the detail diagnosis. It is good at doing troubleshooting for VW vehicles.

Jan 05, 2013 | Cars & Trucks

2 Answers

My 2001 vw jetta wont pass smog, failed on emissions part..check engine light is on for multiple things do I need to fix all to get car to pass smog? Fuel injectors and O2 sensor.


ALWAYS PERFORM TESTS AND REPAIRS ON THE FIRST DTC AND RETEST AFTER EACH STEP.ONE SENSOR OR COMPONENT FAILURE CAN CAUSE OTHERS TO FAIL AS A RESULT.MEANING THE FIRST CODE COULD HAVE CAUSED THE OTHER CODES TO CYCLE.SO ALWAYS DIAG THE FIRST CODE STORED AND EACH ONE AFTER AS THEY WERE READ DURING THE SCAN

Oct 09, 2012 | 2002 Volkswagen Jetta TDI

1 Answer

My car is running codes P0011 and P2181. Can you tell me what that is please. 2004 vw jetta gl


P0011 - Camshaft positioning sensor
P2181 - Engine cooling temperature sensor.
If you have a repair manual (chilton/haynes/etc) these should be fairly simple fixes.
Camshaft positioning sensor for my car was $35 and took about 15 minutes to change.

2carpros.com suggested the P2181 is also fairly easy to replace
http://www.2carpros.com/questions/volkswagen-jetta-2004-volkswagen-jetta-code-p2181-engine-cooling-performance

Jul 24, 2011 | 2004 Volkswagen Jetta

1 Answer

I have a 2005 vw jetta gls 2.0L 4cyl throwing up codes p2181 p2181 and p0068 what are these


p2181 = cooling system performance

p0068 = Throttle position sensor inconsistent with mass air flow sensor.

Feb 25, 2011 | Volkswagen Jetta Cars & Trucks

1 Answer

What are the cause of a mil light on 2002 vw jetta- how cna one diagnosi this under the hood? can cold weather be a cause and can this correct itslef


Check the MIL code to see what exactly is the problem. For instance, it may be an O2 sensor that has been damaged in the cold.
Please read the following link. It is a great source to troubleshoot MIL codes.

Volkswagen Diagnostic Trouble Codes
DTC Table - General

From model year 1996, vehicles manufactured for the North American market are equipped with a Government required diagnostic system known as On-Board Diagnostics II (OBD II). This system monitors operation and function of all engine management system activity and automatic transmission operation to insure compliance with specified emission levels.

Vehicle emission levels are constantly monitored by the OBD II system and malfunctions are recognized and recorded. A Malfunction Indicator Light (MIL) in the instrument cluster alerts the driver to the fault and the need to have the system checked for fault codes. These codes follow a standard format and are known as Diagnostic Trouble Codes (DTCs).

DTCs are assigned two codes. The first code is a numerical code assigned by the factory. The second code is referred to as a P-code and follows a structure required by law and defined by the Society of Automotive Engineers (SAE). This standard uses a letter to designate the system and four numbers to further identify and detail the malfunction as listed below.
http://www.bentleypublishers.com/tech/vw/vw.dtc.table.htm

Dec 30, 2010 | 2002 Volkswagen Jetta TDI

2 Answers

5 error cods on my 2002 Jetta GLS 1.8 Turbo Engine


P0420= Catalyst System Efficiency Below Threshold Bank 1
P0300=Random/Multiple Cylinder Misfire Detected
P0301=Cylinder 1 Misfire Detected
P0172=System Too Rich Bank 1
P2181=Cooling System Performance
you need to write these down,have someone clear the codes in the car,then go for short ride and recheck which if any code reappears.it's like domino's affect,one sensor can start a chain affect with the others.

Dec 09, 2009 | 1998 Volkswagen Jetta

1 Answer

P2181 code pulled. Driver side A/C fan not


The fan assy does come out of there. It's definitely a DIY job. I believe it's just 3/4 screws and the wiring harness. I had to replace a fan about a year ago and it was pretty simple, aside from there not being enough room in there for my hands. I believe the screws are T25 or T20 torx screws. Failure of a fan is pretty common on the MKIV VW's...

Jul 16, 2009 | 2003 Volkswagen Jetta TDI

1 Answer

CEL is ON. OBD code P2181. I already replaced the ECT 3 mo ago due to OBD code P0118.


P2181 is a overheating engine.  
Can be:
Bad fan themoswitch, temp sensor themostat water pump impeller fan motor or fuse on battery
check to see if fans work by turning on Air Conditioner (fans should run with A/C on). Turn A/C off, warm engine, check to see if fans come on, if they do NOT it may be thermo switch on radiator on lower left side, has 3 wire plug, takes 1-1/8" wrench/socket to remove.  This thermo switch controls fans when temp reaches 195F, if fans do not come on at engine temp 190-195F try  replace switch VW part number: 1J0-959--481-A  You can verify if the switch is bad by shorting wire 1 and 2 (fans should come on when jumpered).

Oct 15, 2008 | 2002 Volkswagen Jetta TDI

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