Question about 2002 Volkswagen Jetta TDI

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2002 jetta leak detection pump

I have a 02 Jetta 2.0L GL. The check engine light is on and I have been told that I need to replace the Leak Detection pump, the Secondary Air Outlet hose, and the Combination valve to the tune of $1000.00. I dont mind doing the work howeber, the Haynes manual that I have is seriously deficient. How do I replace these parts? Do I need any special tools? Do I really need to replace all these parts?
06a131351d: 06a131137,:ij0906201b are the part numbers respectively.

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  • JETTA mama Apr 20, 2009

    I currently cannot pass emission and renew my lic plates because of this air pump failure also.

    I love my Jetta but dam - is it expensive to maintain.

    Just put $1600.00 into it in February 2009 - now this - another $300.00 for the part and lucky to have a friend to do the labor.



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Posted on Jan 02, 2017

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SOURCE: My daughters 1999 Jetta GL, 2.0 liter AEG engine,

check the fuel pump pressure

Posted on Jul 16, 2009

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SOURCE: Do I need a special tool to loosen the belt on a 2001 VW Jetta 2L

most of the time basis had tools.... 15 to 18 mm nut on tensioner pulley?or maybe just a ratchet? most cars are easy if unsure any farther your local quick lube maybe able to help When I managed one we helped people all the time it was good for repeat bis....

Posted on Aug 07, 2009

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SOURCE: 2002 VW Jetta 1.8T has a leak somewhere.Need diagram

Bring the car into a repair shop and have them pressure test it for leaks or you can purchase a pressure tester make sure you get the appropriate adapter for your cars radiator filler neck or resovoir, and check for leaks yourself. Make sure the car is cold and there is the appropriate mixtiure of coolant and water in the system, prior to pressure testing. Also do a visual inspection of the cooling system when the vehicle is cold and look for leaks.

Posted on Apr 15, 2010

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SOURCE: 97 Jetta Secondary Air Injection System Incorrect Flow

the air pump is located on the engine towards the front of the vehicle and has apx. 3/4 diameter pipes running to and from it. it is apx. 2 fists in size and it is black plastic. one of the lines on top of the air pump runs to the other side of the engine towards the firewall. at the other end of that pipe is the valve. disconnect that pipe while the vehicle is running. no air out of the pipe means bad pump. air coming out of the pipe means bad valve

Posted on Feb 13, 2011

  • 95 Answers

SOURCE: I have a 2001 Jetta

The P0412 code sounds like an electrical concern for one of the air injection valves. That may require some diagnosis that a reputable shop can provide.

As far as the P0455 goes, you may be able to remedy that yourself- is the gas cap loose or incorrectly seated? If the gas cap is seated and clicked all the way on and the rubber seal on the underside of the cap is not cracking, there may be a line disconnected somewhere, or a failing vent.

Also note- if the gas cap IS loose, and is the reason the 'check engine' light came on, tightening the cap won't turn the light off immediately. The vehicle's on board computer needs to run its normal test on the EVAP system and verify there is no longer a leak. This kind of test is run by the on-board computer while you're driving. If it sees that the leak is no longer present, the light will turn off by itself. It could take one day or even one month before the light goes out depending on how much you drive. Or you could clear the code if you have a code reader or a scan tool.

Posted on Aug 08, 2011

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3.3l engine. What are the probable causes of DTC P1495?

answer courtesy of engine codes .com Engine-Codes OBDII Code List P1495 Dodge
P1495 Dodge P1495 Dodge - EVAP Leak Detection Pump Solenoid Circuit Condition 3 ' Add Comment Possible causes
- Faulty Leak Detection Pump (LDP)
- Leak Detection Pump (LDP) harness is open or shorted
- Leak Detection Pump (LDP) poor electrical connection
What does this mean? When is the code detected?
Malfunction is detected when the Powertrain Control Module (PCM) detected the pump solenoid did not change status when activated,
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors
P1495 Dodge Description
The Evaporative emissions system is design to prevent the escape of fuel vapors from the fuel system. Leaks in the system, ca allow vapors to escape into the atmosphere. The leak detection system tests for EVAP system leaks and blockage.
During the self-diagnostics, the Powertrain Control Module (PCM) first checks the Leak Detection Pump (LDP) for electrical and mechanical faults. If the first checks pass, the PCM then uses the LDP to seal the vent valve and pump air into the system to pressurize it. If a leak is present, the PCM will continue pumping the LDP to replace the air that leaks out. The PCM determines the size of the leak based on how fast/long it must pump the LDP as it tries to maintain pressure in the system.

Read more: P1495 Dodge EVAP Leak Detection Pump Solenoid Circuit Condition

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1 Answer

Check engine light stays on

code p0460 refers to fuel tank level sensor--circuit malfunction===causes ---wiring---fuel tank level sensor---ECM. However in the Volvo section there is a p1446 code that refers to evaporative emission (EVAP) leak detection pump---signal malfunction====causes wiring--poor connection---EVAP leak detection pump.
Go back to who read the codes and ensure that the right code was told to you.l

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1 Answer

Engine light stays on code p1494

P1494 code is a leak detection pump switch or mechanical fault, leak detection pump switch does not respond to input. The leak detection pump (if equipped) is located under the air filter housing on models through 2001. Check if the vapor and vacuum lines are securely connected to the leak detection pump or a diagonstic trouble code my be set like this. The leak detection pump switch may be bad and need replaced.

Sep 27, 2011 | 2000 Jeep Cherokee

1 Answer

My check engine light is on and I've replaced the gas cap I was told it's my leak detection pump on my 03 Jeep Grand Cherokee 4.7 litre engine. Is there a way to repair the leak detection pump?

Be patient, it the light went on because of the gas cap it will take a bunch of starts and warm ups before the computer sill decide the problem has been corrected and turn of the light itself.

Mar 28, 2011 | 2003 Jeep Grand Cherokee

2 Answers


The Dodge P1494 engine light code means Leak Detection Pump Switch or Mechanical Fault. A proper diagnosis must be done, you can't simply replace the LDP and expect that to fix the problem. It shouldn't hurt anything to keep driving it for a while until you can get it fixed.
There is a technical service bulletin that applies to your vehicle and it mentions that code specifically. I'm including it here for your information: TSB-18-01-00
SUBJECT: Misdiagnosed Leak Detection Pump Systems With DTC P1494, P0442, P0455, OR P0456.
MODELS: 1997 - 2000 (LH) Concorde/Intrepid/LHS/300M/Vision and others
During evaporative system diagnosis, Leak Detection Pumps have mistakenly been replaced. A thorough inspection for pinched, kinked, or disconnected supply vacuum lines (as currently listed in the Powertrain Diagnostic Procedures) is a critical step in diagnosing DTC P1494 (LDP SW OR MECHANICAL FAULT). Additionally, the other evaporative leak faults (DTC P0442 - SMALL LEAK, P0455 - LARGE LEAK, and P0456 - VERY SMALL LEAK) should have the supply vacuum lines examined for pinches or kinks prior to any LDP component replacement. The supply vacuum lines should be checked from the engine compartment all the way to the fuel tank, including the LDP and purge system.


Hope helps (remember rated and comment this).

Sep 08, 2010 | Dodge Dakota Cars & Trucks

1 Answer

My engine light is on what could it be.

That is a code for the leak detection pump in your EVAP system. When gas evaporates in the fuel tank the fumes are sucked into the engine instead of released into the ozone. The Leak detection Pump test for leaks in that system. The most common cause of this code is that the pump itself went bad.

Jun 20, 2010 | 2002 Dodge Caravan

1 Answer

Check Engine Light code on dodge caravan ec P1495

the leak detection pump pressurizes the evaporative system to check for leaks. the computer has detected there is a fault somewhere in the cicuit (wiring) that operates the pump.

Jun 26, 2009 | 2002 Dodge Caravan

1 Answer

I have a 2003 VW jetta tdi

You've lost engine coolant somewhere, and need to fill the engine back up with the VW special G12 coolant.

Then find the leak, which will be in one or more of the following places -
Water hoses to heater core, including any other coolant carrying hoses in the engine compartment
Radiator hoses
Plastic manifold bolted to side of engine which is known to leak (have replaced on an '01 VW Beetle, and an '02 Jetta, both members of our family in the past few years.).
Overflow reservoir cracked
Radiator leak.

Reply back what you find. If the engine got too hot, you may need to have the thermostat replaced.

Feb 03, 2009 | 2003 Volkswagen Jetta TDI

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