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Chevrolet Traverse Bad catalytic converter check engine light Problems & Solutions

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: 2005 Hyundai Tuscon Catalytic Converter

its part of your exhaust and cannot be replaced yourself. take it to a local shop and not the dealer and it will be a whole lot cheaper

Posted on Oct 23, 2008

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daves944
  • 1050 Answers

SOURCE: Check engine light due to Catalytic converter

Without knowing the specific code, I will assume it relates to an inefficient catalytic converter. At this mileage it could very well mean that the catalytic converter is failing to do it's job and needs to be replaced. The computer sets this code when it sees a signal from the rear O2 sensor start to change in time with the front O2 sensor. It should not. If the cat is working, The rear O2 sensor should have a stable output as the cat is supposed to be removing all the oxygen from the exhaust. Sometimes this code will set if the spark plugs or the engine's state of tune has deteriorated and is producing more emission than the cat can handle, the rear O2 sees the overflow and assumes the cat is bad.
At your present mileage, I would strongly suggest changing the spark plugs if they have not been done in the last 20,000 mi. Have the light reset and drive it to see if the code returns. If it does, replace the catalytic converter. I suspect that you do need a cat, but I view the spark plugs as maintenance, and I wouldn't want to put a brand new cat in without the assurance that my old plugs were not going to damage the new one.
Hope this helps,
Dave

Posted on May 19, 2009

  • 14036 Answers

SOURCE: Catalytic converter is bad on 1995 Subaru Legacy L Wagon

dearship parts are high.you can buy a factory catalytic converter or universal converter cheaper at auto parts place.they basic the same parts the.dealership has same catalytic converter.they put their price and labor rate charge an hour your pocket book will be empty.i have used universal catalytic converter.had no problem with it.the only difference is universal converter body a little shorter.but has same lengh as factory.if check engine is coming on you cant turn it off .if computer showing you a code.you could have a misfire causing rich exhaust emission.that can ruin a catalytic converter have it scan.dealership charge you about $130.00 .you can have it scan at advance auto or auto zone.to see what pcm code is.it could be oxygen sensor somethinh minor.

Posted on Jul 12, 2009

  • 1 Answer

SOURCE: Check engine,2000 Nissan Maxima

same things happens on me. $500 more on replace senor, $1000 more on bank2, now $1500 on bank1.
F*ck damned Nissan car. The solution is never ever buy a nissan car

Posted on Oct 31, 2009

  • 1 Answer

SOURCE: catalytic converter check engine light 2001 s60 volvo

usually if you start to hear a rumble, and by rumble i mean it sounds like a bunch of pieces of metal are clanking around in your exhaust then the catalytic converter needs to be repaired. It could also be the oxygen sensor which is located on top of the converter. Volvo did an interesting job of having them sit on top of each other.

Posted on Nov 20, 2009

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Hi. My name is DAN and I am responding to an E-mail sent to me by you asking for more detailed information about my vehicles problems. I went to advanced auto parts on 12/19/14. I used the check engine...


Replace the O2 sensors first, that may take care of the code you are getting saying catalytic converter. If you get the code after that I would think you would be able to just replace catalytic converter, but make sure the rest of the exhaust is clear. I have seen a piece fall down inside a muffler and plug it off giving problems also.

Dec 24, 2014 | Cars & Trucks

1 Answer

P2097 engine light on


P2097 code has two fault locations. 1) post catalytic converter fuel trim (FT), bank 1 - too rich. possible cause Catalytic converter. 2) Heated oxygen sensor (HO2S) 1,bank 1 range/ performance- circuit low. if it's running fine. probably just need to put an oxygen sensor in it.

Jan 30, 2014 | 2010 Chevrolet Traverse

1 Answer

2001 chevy impala po420


it could be the O2 sensor located on the exhaust just in front of the converter. there are two of them. one right after the manifold & the one just before the catalytic converter, on my car i changed the one just before the converter. had to drive the car 100 miles or so before the light went out. costs about $80 bucks disconnect the wire and it screws out . not to bad a job .can try cleaning it youeself . sometimes this works too. hope this helps.

Mar 19, 2013 | 2001 Chevrolet Impala

1 Answer

How to check fuel pressure


Hi there:


A code P0306 may mean that one or more of the following has happened:

  • Faulty spark plug or wire
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Running out of fuel
  • Poor compression
  • Defective computer


Possible solutions: If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable).


Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.




A code P0300 may mean that one or more of the following has happened:

  • Faulty spark plugs or wires
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector(s)
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Stuck/blocked EGR valve / passages
  • Faulty camshaft position sensor
  • Defective computer

If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.

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Aug 13, 2012 | 2009 Chevrolet Traverse

1 Answer

I have Service engine light on for my nissan 2001 maxima. Dealer ran the diagnostics and said Bad o2 Sensor. Today , the Service engine light is gone.. Do I need to replace the part anyway or wait for the...


if it comes back, yes you will need. without pre o2 sensor your car wont idle, it will use lots of fuel and you will face drivability problems if it is post o2 sensor, it is there to check if catalytic converter is ok or not(it won caue drivability problems but may consume little more fuel to run rich and to save catalytic converter). if sensor is broken you need to replace it. if you have error for post o2 sensor but it is ok, this means your catalytic converter is going bad.

Nov 18, 2011 | Cars & Trucks

2 Answers

O2 SENSORS LOCATIONS


The O2 sensors are located in the exhaust pipe just off the engine exhaust manifolds and before the Catalytic Converter. A V6 has 2 of them, one for each bank of cylinders, they are referred to as the "Bank 1 and Bank 2 Upstream sensors". There is also a sensor that looks like a O2 sensor it is located behind the Catalytic Converter, its job is to monitor the efficiency of the Catalytic Converter and signal you with a check engine light and a code P0420 if the Cat is not doing its job. Each sensor has its own set of fault codes if problems are sensed in the O2 levels in the exhaust (fuel control problems) and other problems like the heater circuit in the sensor is defective.

Oct 01, 2011 | 1992 Chevrolet Lumina

1 Answer

My check engine light came on about a month ago. Code was catalytic converter. Teh light went off/away on its own. Van ran fine to me & made no noise. Sometimes it would miss/skip once it hit 10 mph....


the catalytic converter might be disabled due to a problem with ignition coils. They most likely need to be replaced. Here is a site (click link) with people describing similar problems, including the hesitation/miss/skip followed by the engine running roughly and cat problems. Engine coils are the most likely culprit, common with your vehicle unfortunately

Feb 02, 2011 | 2002 Mazda MPV

3 Answers

My check engine light came the code is p0420


Technical Description

Catalyst System Efficiency Below Threshold (Bank 1)
What does that mean?

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady. Typically the P0420 code triggers the Check Engine Light if the readings of the two sensors are similar. This is indicative of (among other things) a converter that is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.
Symptoms

You will likely not notice any drivability problems, although there may be symptoms.
Causes

A code P0420 may mean that one or more of the following has happened:

* Leaded fuel was used where unleaded was called for
* An oxygen sensor is not reading (functioning) properly
* The engine coolant temperature sensor is not working properly
* Damaged or leaking exhaust manifold / catalytic converter / exhaust pipe
* Retarded spark timing
* The oxygen sensors in front and behind the converter are reporting too similar of readings

Possible Solutions

Some suggested steps for troubleshooting a P0420 error code include:

* Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.
* Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
* Inspect the downstream heated oxygen sensor (HO2), replace if necessary
* Replace the catalytic converter

One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It's worth checking into.

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Sep 07, 2010 | 1996 Chevrolet Blazer

1 Answer

My check engine light came on with P0422 and P0455 codes. Any suggestions as to the cause.


P0422 - Catalyst below threshold.

Catalytic converter is clogged or out of medium.

Replace it.


ACTUAL DIAGNOSTIC:

Fault Code Definition
Code P0422 indicates that the Bank 1 Main Catalytic Converter's emissions efficiency has fallen below the minimum allowable limit. This threshold is tracked by a Catalyst Monitoring Oxygen Sensor located on or near the outlet of the Catalytic Converter.

Symptoms

* Check Engine Light will illuminate
* In many cases, no abnormal symptoms may be noticed

Common Problems That Trigger the P0422 Code

* Defective Catalytic Converter
* Engine misfires have damaged the Catalytic Converter
* Internal engine damage resulting in high oil consumption and/or a leaking Head gasket has damaged the Catalytic Converter

Common Misdiagnoses

* Oxygen Sensors are replaced when the real problem is a damaged Catalyst
* Catalyst is replaced when the real problem is internal engine damage, which is producing elevated emissions levels
* Catalyst is replaced when a misfiring engine is the real problem



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Aug 04, 2010 | 2008 Saturn VUE

1 Answer

Chech engine light code says # 2 misiing


Misfire 2 Cyl generated DTC P0302 Code - Cylinder #2 Misfire

A P0302 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #2.

Symptoms may include:
* the engine may be harder to start
* the engine may stumble / stumble, and/or hesitate
* other symptoms may also be present

Causes: A code P0302 may mean that one or more of the following has happened:
* Faulty spark plug or wire
* Faulty coil (pack)
* Faulty oxygen sensor(s)
* Faulty fuel injector
* Burned exhaust valve
* Faulty catalytic converter(s)
* Running out of fuel
* Poor compression
* Defective computer

Possible Solutions: If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Hope helps (remember rated this).

Jul 19, 2010 | 1999 Chevrolet Malibu

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