Trouble P0422 - Main Catalytic Converter Bank 1 Efficiency Less Than Required

What does P0422 mean?

Trouble P0422 is a general trouble code that indicates that the primary catalytic converter (bank 1) efficiency is below acceptable levels. Catalyst efficiency is determined by the transmission control module (PCM), which uses exhaust gas and temperature data from oxygen sensors located upstream and downstream of the catalytic converter to determine efficiency. If the readings from both sensors match or are almost identical, this indicates that the catalyst efficiency is most likely below acceptable levels. In this case, error P0422 will appear.

Specifications

The SUV is powered by a non-alternative 83-horsepower (129 Nm) gasoline engine with a displacement of 1.7 liters. The engine is paired with a 5-speed manual transmission.

The car accelerates from 0 to 100 km/h in 17 seconds, and the top speed is 142 km/h. Fuel consumption in city mode is 12.1 liters per 100 km, and on the highway - 8.3 liters per 100 km.

Review and test drive of a domestic SUV (video):

Test drive of the new LADA 4×4 Urban:

Review of Lada 4×4 bronto (Niva Bronto) in the forest in winter:

Options and prices

Prices for the 3-door Lada 4×4 21214 (Niva) 2022 will vary from 518,900 rubles for the “Classic” version to 574,900 rubles for the luxury “Black Edition” version. A modification with 5 doors is offered in the “Classic” configuration for 557,900 rubles. “City” version of LADA 4×4 Urban 3 doors. available in the “Lux” version for 581,900 rubles, and in the five-door version - 620,900 rubles.

The SUV's basic equipment includes daytime running lights, fabric upholstery, athermal glass, ISOFIX child seat mounts, power steering, a full-size spare tire and 16-inch forged wheels.

The Luxury package is complemented by an anti-lock brake system with emergency braking assist (ABS+BAS), dynamic vibration damper, and heated front seats.

In November 2022, sales of a new modification of the Lada 4×4 Bronto began in Russia. The car received luggage rails on the roof, enhanced sound insulation, a standard audio system, and power steering. The equipment of this version includes: air conditioning, heated front seats, electric drive and heated exterior mirrors, roof rails or an expeditionary trunk, original “camouflage” coloring (7 options). The cost of the new Lada 4×4 Bronto 2019 starts from 722,900 rubles.

At the beginning of April 2022, Lada 4×4 in camouflage went on sale. The price of such cars is 534,900 rubles, in the version with air conditioning - 556,900 rubles.

For the five-door LADA 4x4 2022, a new Black Edition package has appeared (598,900 rubles). This version is based on the maximum level of equipment, which includes such comfort elements as air conditioning, electrically adjustable and heated exterior mirrors, as well as improved vibration insulation (additional damping pads are glued to the front panel, outer door panels, floor and sidewalls). The car body in the Black Edition version is painted with black Panther enamel, and the alloy wheels are also black. Similar 16-inch wheels are installed on LADA 4x4 in the “Camouflage” version (from 613,900 rubles).

Stylish wheel rims are one of the most important design components. The LADA 4x4 Urban is offered with two-tone “Grizzly” wheels, where the black background is combined with a silver polished surface of the spokes. The cost of LADA 4x4 Urban starts from 581,900 rubles.

In order to increase comfort, LADA 4x4 2022 cars in the Luxe configuration received electrically adjustable and heated exterior mirrors - previously this option was only available on the LADA 4x4 Urban. Also available in the Luxe package are silver alloy wheels with an updated design. The new Lada 4x4 2022 in the Luxe version is offered from 522,900 rubles.

Causes of error P0422

The most common cause of P0422 is a faulty catalytic converter. Other reasons are:

• Oxygen sensor malfunction
• Engine coolant temperature sensor malfunction
• Fuel pressure regulator malfunction
• Manifold air pressure sensor malfunction
• Air flow sensor malfunction
• Engine oil contamination
• Engine leak before catalytic converter
• Misfires in engine cylinders
• Damage to wires and connectors

Niva instrument panel: description of indicator lamps

For the fullest description, we took the shield from the most common version of the VAZ 21213.

You should also highlight the colors of the car's indicators. They can be divided into three parts.

Exclamation mark on the Niva panel

How does a mechanic diagnose a P0422 code?

Error P0422 can be diagnosed using a standard OBD-II scanner. The mechanic uses a scanner to view data and gather information about the code, as well as check for other error codes that may be present. The mechanic will then clear the error codes from the PCM memory and retest the system to see if P0422 appears again. If the code disappears, it may indicate an intermittent error or that the code appeared in error.

If the P0422 code appears again, have a mechanic inspect the wires and connectors near the catalytic converter. He will repair or replace any damaged items. The mechanic will then inspect the catalytic converter and also perform a thorough check of the exhaust system for leaks.

If the catalytic converter is the problem, the mechanic will examine other vehicle components to determine the cause of the catalytic converter damage.

Common errors when diagnosing code P0422

The most common mistake when diagnosing a P0422 code is failure to follow the diagnostic protocol, which leads to hasty replacement of the catalytic converter. Before replacing the catalyst, it is necessary to eliminate the cause of its damage, and also consider other error codes present.

It is also a mistake to hastily replace oxygen sensors. Before replacing them, it is necessary to perform a thorough diagnosis, since usually a faulty sensor is not the only cause of the P0422 error.

The efficiency of the main neutralizer block 1 is below the threshold

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I called the officials - they say there are 2 programs for Bosch - one only software, the other with changes to the device (soldering a resistor), 1 DC, as I understand it = one of them, changing the brains to Euro-2??

True, they say they won’t let you into Finland without Euro-3. although we have never measured the exhaust, I drove it all the time. ..

I almost bought a new neutralizer. well, then I took it to a mechanic - he saw that I didn’t have a converter underneath, but was standing by the engine

PS Do you have to throw the collector out or will the firmware work around it?? in order to remove it (again, about rumors) you need to spin up half the engine) and this makes the process more expensive, I don’t want to.

I called the officials - they say there are 2 programs for Bosch - one only software, the other with changes to the device (soldering a resistor)

1 DK, as I understand it = some of them, altering the brains of Euro-2??

PS Do you have to throw the collector out or will the firmware work around it??

in order to remove it (again, about rumors) you need to spin up half the engine) and this makes the process more expensive, I don’t want to.

what are the prices for firmware and can you recommend trusted professionals?

unscrew the side of the beard and take a photo of the sticker

not good at etiquette - what is a beard?

thank you for your wise guidance.

_________________ Everything is iron when the thread breaks. Even holy Mercedes.

Bearrr

everyone drives and doesn’t blow, and your neutralizer efficiency is low. Unique or what?

In fact, you yourself write that you have high air and gasoline consumption. Those. overflows like hell. This is where we need to dig, and the catalyst is a consequence. It stupidly fills him with gasoline, so he grumbles. I liked the comments about reinstalling and disabling 2 recreation centers. So the author at least found out what was overflowing with him, but how will he find out after the alteration? Another topic will appear: “High consumption, help” or “Smoke black when using gas”

everyone drives and doesn’t blow, and your neutralizer efficiency is low. Unique or what?

I don’t understand why drive with your checkin on fire?? I didn’t understand why - I was talking about the line from the computer in the diagnostics, I didn’t invent this neutralizer myself. Anyone from this forum is unique - or have you seen a couple of the same ones?

There is an opinion that it is because of the neutralizer that it is overflowing, which is why it is going to turn off.

Bearrr

I wrote that there are millions of cars like yours and they all drive and everything works in stock. So we must not break what has been done, we must repair it. When the car is fully operational, then you will think about reflashing and removing the data.

If you change now, you risk forever losing the opportunity to get to the bottom of the overflow problem.

The neutralizer is the last link in the system, and even more so the 2nd DC. He is feedback. And he always strives to bring the state of the mixture as close to ideal as possible. A working sensor (both 1 and 2) will never give a command to overflow. Especially if the second sensor says that the neutralizer is not coping.

Maybe your first DC pins and gives the command to overflow, hence the high consumption of gasoline and air. And the second sensor bends due to such parameters.

You checked your parameters against the acceptable ones using the tables.

If you do all this and diagnose it at a service station, then you are 95% sure that the technician does not understand anything at all about the ECM

How serious is the P0422 code?

The severity of the P0422 code depends on the cause of its occurrence. If the problem is a bad catalytic converter, the engine may stall frequently or be difficult to start. In this case, problems with the vehicle's handling may occur. However, if everything is in order with the catalyst, there should not be any serious problems. In any case, if this code is detected, it is recommended that you contact a qualified technician as soon as possible to diagnose and repair the error to avoid serious damage to the catalytic converter.

Popular myths

Varieties
Some people deliberately get rid of the catalyst, others deliberately ignore the clogged unit. All this caused the spread of myths.

Therefore, monitor the condition of the catalyst on the VAZ 2114, check its functional condition, and if necessary, replace it with a new one or replace it with a flame arrester. Both options have shown their effectiveness.

Today we will talk about signs of catalytic converter failure. Many car owners believe that this device is eternal, but unfortunately this is far from the case. But first things first.

What repairs can fix the P0422 code?

To resolve error P0422 you may need to:

• Replacing the catalytic converter
• Replacing oxygen sensors
• Repair or replacement of electrical wires and connectors
• Repairing engine leaks
• Replacing the air flow sensor
• Replacing the manifold air pressure sensor
• Replacing the fuel pressure regulator
• Replacing the engine coolant temperature sensor

Additional comments for troubleshooting P0422

If the cause of this error is a faulty oxygen sensor, other error codes related to this sensor may also appear along with the P0422 code.

Car manufacturers are required to provide a 100,000 kilometer warranty on the catalytic converter. If the catalyst is damaged or fails, you need to find out whether it can be replaced under warranty.

[need advice] P0420 catalyst low efficiency

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  [need advice] P0420 catalyst low efficiency

  Hello everyone, the check light on my dashboard came on, the diagnostics showed error P0420, there are several options for solving this problem: 1. Knock out (remove) the catalyst, install a fake on the second sensor; 2. Replace the catalyst with a flame arrester, install a blende on the second sensor; 3. Do a flashing (chip tuning). So I need advice on which method is the most correct? (except for simply replacing the catalyst with a new one)

  Last edited by FAVORIT; 08/07/2016 at 13:28 .

  No money for a new catalyst?

  Everything that is not done remains broken

  If it catches fire once, then extinguish it and refuel in another place. if it lights up again and doesn’t go out, I would, first, and if the car drives the same way and doesn’t stall, I would make a fake for the rear lambdas, and if it stalls (catalysts are clogged), I would knock out the catalytic converters, install flame arresters and re-flash... the ride will be better, but it will cost more money...

  There is a jamb in the poll) Install flame arresters

  If it is possible to update the firmware, do so.

  you will finance the price of a new one is 43,000 rubles. Should I throw off my Sberbank card?

  PM me photos from both sides

  Everything that is not done remains broken

  If you name the brand of firewood (well, not everyone can “remember all the cracks”), then you can offer a chip, tuning, and repair.

  Last edited by E-Lis; 08/12/2016 at 20:56.

  Judging by the Zhipe manual, the car is popish. and therefore change the gas station and don’t wrinkle your forehead.

  If the mileage of the car is close to 100k, then this catalyst has already worn out and its efficiency has really dropped (not to be confused with destruction, melting or clogging!), + our gasoline greatly contributes to this. I extinguished the error for half a year, but it came on more and more often. So if there is an option to upgrade to Euro-2, you need to upgrade, in Novosib prices start from 2-3 rubles, but some ask for 8-10-12 (for example, for Toyotas and Lexuses), but this is due to the lack of widespread availability of firmware for their unit and the fact that they weren’t made until 2015 can now be found even in Novosibirsk for quite reasonable money, 4-5 rubles. After flashing, continue to operate the car. But if the catalyst is destroyed or clogged, then of course remove it first, and then as described above. Having removed the catalyst, it is better to install something in its place (a flame arrester) so that new exhaust sounds are not added, but many do not bother with this matter. And yes, a used catalytic converter is accepted for 1.5-2 rubles, so don’t throw it away! Even that pile of broken ceramics that they shake out of the catalytic converter body.

  if you are talking about the original, have you seen the price?) if you are talking about the universal one, then they say that their life is 2 times shorter than the original one. I haven’t checked it myself, I don’t know. Maybe they're lying, or maybe it's true.

  but in general, either change it to a flame arrester or a universal catalytic converter. It seems like the absence of the appropriate gadget in place of the catalytic converter crushes the resonator and the exhaust as a whole. and he starts growling louder.

  knock them out and sell the crumbled pieces - they charge 2500 rubles per kg

  It's not a fact that it's a problem. There may be a problem with the mixture and this error is simply a consequence of the fact that the catalyst cannot cope with the consequences

  FAVORIT, a year ago I encountered the same thing: p0420 caught fire, I decided to go the budget route: knock out the cat + solder an rc filter as a decoy for the second lambda, in the end I knocked out the cat, they made a flame arrester based on it (2.5 tr.) , literally a month later the car began to behave inappropriately: it doesn’t pick up speed, doesn’t drive, it turned out that the first (diagnostic) lambda died, it seems to me that when they messed with the cat, somehow it was ***** or, in general, + 6 t .R. Then he began to extinguish the poll of the second lambda: he soldered the snag, but still, after a few hundred km, a check with an open circuit comes out (no matter how many times I resoldered it, it didn’t help, people on the network also have 5050 for whom the circuit works, for some it makes brains ). Ok, I think I’ll screw a mechanical snag between the pipe and the lambda - essentially just a nut with a small hole on the outside so that the lambda sniffs clean air - it won’t leak, the check will still come out after a certain number of km (+1 thousand). In the end, I gave up on it all and went to flash my brains on Euro2 - the survey of the 2nd lambda is no longer carried out (+5 TR). Now, a year later, the flame arrester began to burn out and now the increase in speed is accompanied by a hellish roar and ringing like a bucket + vibration in the area of ​​​​the instrument panel. Now I’m thinking what to do: install a normal flame arrester (6 tr + welding 1.5 tr) or make noise in the trash engine shield, or both. In the end everything worked out

  15 t.r. + prospect of additional costs + a lot of headaches. Now I think: whoever told me this then, I would have replaced the cat.