Question about 1996 Audi A6

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Trouble shooting code p0422 - 1996 Audi A6

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P0422--Main Catalyst Efficiency Below Threshold (Bank 1)

Worn out Exhaust Converter

They need to be replaced at 12 to 14 years,
even if they pass inspection,at that point they
no longer are doing much

You can get any codes you want by using google
& entering OBD2 Codes & your codes & can include
your veh & year in case you get euro,asian or domestic
conflict on a code

Posted on Nov 18, 2012

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Hi there,
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Posted on Jan 02, 2017

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What part is this trouble code p0422


p0422 Catalytic Efficiency Bank 1 below par.

Apr 13, 2015 | Cars & Trucks

1 Answer

Trouble code p0422 check engine light on need a map on this part


To look up OBD2 Codes. https://actron.com/code-lookup

Code P0422: Main Catalyst Efficiency Below Threshold Bank.
According to enginecodes.com " "Possible causes - Warm Up Three Way Catalytic converter deterioration or malfunction
- Exhaust system leaks
- Loose front or rear HO2Ss
- Faulty front heater O2 sensor
- O2 sensors harness is open or shorted
- O2 sensors poor electrical connection Code p0707: P0707 Transaxle range switch circuit malfunction (inhibitor switch) open/shorted; low voltage".

According to Ricksfreeautoadvice.com: "Here's how to adjust the switch to get the codes to go away
1) set the parking brake
2 Remove the air filter box assembly so you can access the transmission range switch.
3) Turn the key to the ON position, but do not start the vehicle. Move the shifter to the neutral position.
4) Align the alignment holes between the switch and the shift lever. Insert a 5mm drill bit into the adjustment hole to verify the proper alignment for the neutral position.
5) If the bit won't fit, the switch is out of alignment. Loosen the bolts and move the switch until you can insert the drill bit. Tighten the bolts to 96 INCH/lbs." I hope that helps.

Apr 13, 2015 | 2000 Hyundai Elantra

2 Answers

Jeep liberty codes


Possible causes
- Warm Up Three Way Catalytic converter deterioration or malfunction
- Exhaust system leaks
- Loose front or rear HO2Ss
- Faulty front heater O2 sensor
- O2 sensors harness is open or shorted
- O2 sensors poor electrical connection
Tech notes
As the code description implies the P0422 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be replaced to fix the problem. If the P0422 code is combined with other codes, try fixing the other codes first.

Jul 01, 2014 | 2003 Jeep Liberty

1 Answer

P0422


Here you go!
http://engine-codes.com/p0422.html

Its the sensor telling you to run Terra cleaner!

Mar 09, 2014 | Hyundai Elantra Cars & Trucks

1 Answer

I have a 2001 hyundai elantra and its shooting codes p0422 and p0302 i keep seeing 422 is the cat but is 302 related in anyway or could it be bad sensors anything that can save me from having to repla


Here's a link to your P0302 code.Trouble Code: P0422

Catalyst Efficiency Below Normal (Bank 1)

Possible Causes:


Air leaks at the exhaust manifold or in the exhaust pipesCatalytic converter is contaminated, damaged or has failedFront HO2S is older (aged) than the rear HO2S (HO2S is lazy)Front HO2S or rear HO2S is contaminated with fuel or moisture

Mar 11, 2013 | Honda Accord Cars & Trucks

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Misfire


442 check or replace gas cap,with NAPA parts I had problem.

Mar 03, 2013 | Cars & Trucks

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I own a 1998 Buick LeSabre limited. Recently the check engine light came on and the trouble code comes out to P0422. Hod do I get rid of it?


that code is for main three way catalytic converter below efficiency bank one .you need to change the catalytic converter.

Oct 28, 2010 | Buick LeSabre Cars & Trucks

3 Answers

P0422


P0422 does not refer directly to an O2 sensor. That is a different code. P0422 is about the CAT. How many miles you have it and when did you buy it? VW has extended a warranty on the New Beetles for the CAT to 120,000 mi and 10 yrs. I had the same code and took it to the dealer to see if they'd replace the CAT in the warranty and they did. I had 47,000 miles and bought it at the end of Aug 1999, so I just slipped through. They replaced the downstream O2 sensor as well - all free of charge!

Jan 27, 2009 | 1999 Volkswagen Beetle

2 Answers

I have two check engine lights on P0303 and P0422


Hi,
A good start would be to go you the Diagnostic Trouble Codes list at http://www.bentleypublishers.com/tech/vw/vw.dtc.table.htm

The DTC's, also known as fault codes, may have other meanings but the list above should point you in the right direction.

Hope this helps - if so a rating would be really appreciated. If is doesn't then "add a comment" instead and I will try to help you further.
Cheers D..

Jul 04, 2008 | 1999 Volkswagen Beetle

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