Question about 2006 Volkswagen Jetta

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The exhaust malfunction light came on , any idea what this can be caused from

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Yea converter is probably bad have dealer check it out

Posted on Jul 28, 2009


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Po136-o137 says change 02 sensor on bank 1 sensor2 I did but engine light is still on 2004 chevy tahoe

code p 0136 refers to heated oxygen sensor (HO2S) 2 bank 1 ---circuit malfunction===causes ---heating inoperative ---wiring---HO2S--- ECM
also refers to oxygen sensor (O2S0 2 bank 1---circuit malfunction===causes --- wiring---O2S ---ecm
it also refers to heated oxygen sensor (HO2S) 2 bank 1 ---no signal===causes ---wiring --- HO2S---
code p 0137 refers to HO2S 2 bank 1 ---low voltage -===causes --exhaust leak---wiring short to ground ---HO2S--- ECM
it also refers to O2S 2 bank 1---low voltage ===causes exhaust leak---wiring short to ground ---O2S ---ECM
to set you up here-- there are 4 oxygen sensors in the system
2 are heated oxygen sensors (HO2S) on in each exhaust manifold or exhaust pipe before the cat converter and
2 oxygen sensors (O2S) -- one in each exhaust pipe after the cat converters
heated oxygen sensors have 4 wires and O2S sensors normally only 2 wires
it is more that possible that you changed the wrong sensors and in the process damaged the delicate wires with the incorrect spanner being used

Jul 25, 2016 | 2004 Chevrolet Tahoe

2 Answers

99 maxima ran till it was parked now it turns over will not start gave code p0400 any ideas

The fault is somewhere around the EGR valve - probably the EGR valve or the throttle position sensor.

Before replacing any sensors try removing and cleaning the EGR.

Here's a Youtube link that may be of help to you:

1999 maxima egr Google Search

This link explains about the EGR:
P0400 Exhaust Gas Recirculation Flow Malfunction

CEL code P0400 EGR Flow Malfunction

Mar 27, 2016 | Cars & Trucks

3 Answers

What causes emissions control.light to come om

a lot of things you need to get code then go from there

Feb 20, 2015 | 2006 Toyota Corolla

1 Answer

1997 ford aerostar

The catalytic converter may be coming apart inside - the loose catalyst could be moving around and intermittently blocking the exhaust. A malfunctioning Exhaust Gas Recirculation valve could also be part of the problem. Sometimes carbon buildup in the exhaust manifold can cause trouble, but usually this causes stalling upon acceleration after coasting down a hill.
Put your hand near the exhaust pipe outlet while a helper starts the engine. If the exhaust flow is highly variable in volume (not just simply on-off as it would be for a cylinder misfire), you definitely need to check for exhaust blockage.
Fuel delivery problems (e. g. pressure bleed-down followed by fuel vaporization in the line) can cause hot start problems, but that doesn't account for the odd noise under the vehicle.

Oct 20, 2011 | Cars & Trucks

1 Answer

2000 Volvo s80, t6 (158k). yesterday it started to feel like it was staving for gas and might stall, but never did. If I keep the gas pedal steady with no burst of acceleration car skips along huffying and...


Sep 11, 2011 | Volvo S80 Cars & Trucks

1 Answer

We just fixed the EGR valve and now 3 weeks later the P2097 error code was detected.

Not sure of your vehicle but it is not likely that it's part of the EGR valve although you need to make sure the gasket for the EGR valve isn't leaking because leaking exhaust will set this code. Does your vehicle have a EGR solenoid/transducer. The reason I ask is because in Chrysler products the EGR valve and transducers are calibrated together and this may be causing the EGR to open to much and exhaust will leak. I serious don't that it has anything to do with the EGR valve you just replaced however. I think you just have another problem. That's my opinion anyway. The possible causes of the code is: • Leakage exhaust gas • Rear HO2S malfunction • IAT sensor malfunction • ECT sensor malfunction • Front HO2S malfunction • Excessive fuel line pressure • Fuel pump unit malfunction • Purge solenoid valve malfunction • Insufficient engine compression • PCM malfunction Find out about the transducer and then go from there like O2 sensors as well as the other possible causes. I wish I could be more help and I hope this helped a little anyhow. Good luck.

Apr 25, 2011 | Chrysler Town & Country Cars & Trucks

2 Answers

The Malfunction Indicator Light(check) of my 2003 Hyundai Tiburon stays on. I read the manual is says" This light illuminates when there is a malfunction of an exhaust gas related component, and the...

you need to scan for codes
codes will tell you what has malfuntion
you can buy a scanner or take to a garage to scan
some parts store will scan and retrive codes and make suggestion
based on previous sales what may be wrong
your car your call

Apr 06, 2011 | Hyundai Tiburon Cars & Trucks

1 Answer

Hi we have a 1.3 Hyundai Getz, this morning the Malfunction Indicator light has illuminated the book advises me that there is a malfunction of an exhaust related component so the exhaust gas regulation...

there were no efi engines in 54 so guessing that it is either a 95 , 04 or 14 plate plater vehicle
run the fault codes to determine the exact fault
most probably the EGR system that is faulty

Sep 12, 2017 | Hyundai Accent Cars & Trucks

1 Answer

What causes the '' Service Engine Soon '' light to come on?

The malfunction indicator lamp is illuminated when ever there is a fault in either the monitoring system or a control system which could cause damage to the engine or exhaust catalyst. It also illuminates when the exhaust catalyst has failed.

Dec 16, 2010 | 1998 Mercury Tracer

1 Answer

2003 Hyundai Elantra Malfunction Light is On

What you can do is go to Auto Zone and have the code read.They will do this for free.This is the best thing to do.Other wise your just wasting your money replacing things that could have nothing to do will the problem.The owners manual just gives you a vague idea of what it could be.Usually the light will have to be reset with a scan tool or after it passes the test for what ever was causing the problem the light will clear itself.Some times it can take a times before it clears.Hope this helps.Good luck.

Mar 15, 2010 | Hyundai Motor 2003 Elantra

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