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Ford Taurus 2004 ses 3.0L engine light code P0340 Catalyst System Efficiency Below Threshold (Blank 2)

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

polarcycle
  • 1392 Answers

SOURCE: Catalyst System Efficiency below threshold.

Need to replace your cat converter. You can do it if you are mechanically inclined. But, most likely will need to be taken to someone with a lift. Yes it will be expensive. Look at $500-1000.

Posted on Mar 16, 2009

rockitman187
  • 2559 Answers

SOURCE: Code P0430 Catalyst Efficiency below threshold (bank 2)

one of your O2 sensors is showing as bad.

Posted on May 11, 2009

ghost4548
  • 776 Answers

SOURCE: 2002 Hyundai Sonata code reads P0430 what does this mean Catalyst System Efficiency Below Threshold (Bank 2)

That's a pretty RELIABLE code!... You have a bad CAT (Catalytic Converter). Trust it to be accurate. The conditions which set this code is when the Upstream O2 sensor's data/signal is compared to the Downstream sensor's data/signal... when they are nearly identical, that's when this code is set (unless you have an exhaust leak).. If there is an exhaust leak.. repair it, then retest/recheck.

Posted on May 31, 2009

johnjohn2
  • 5763 Answers

SOURCE: code PO420 catalyst system efficiency below threshold

you may have a bad converter, its not cleaning the exhaust, but on the other hand a bad rear o2 sensor can also cause this problem,there is a wat to test but you would need a scan tool or scope,replace the other sensor, if light returns then replace the converter, no money lost, if you were to replace the converter the o2 sensors should also be replaced. you have 165000 miles it would be crazy not to replace sensor and install new cat, so basically your just doing it in 2 steps and may get lucky and not need a cat. good luck.

Posted on Mar 05, 2010

Testimonial: "Your information is exactly what I needed to know.I suppose I just did not want to spend the money for a cat. converter. Thanks again for your help. "

  • 1857 Answers

SOURCE: i have 2 trouble codes on my 2002 dodge ram 1500

9 times out of then this points to bad cat and the cat will need be changed.

Other things that can cause this code are an exhaust leak before the front 02 sensor or the car in need a of a tuneup badly. Generally if this problem is sensor related you would have other codes also.

If you want to know of the cat is bad the computer stores data and when you have a data scanner that can access MODE 6 the data can indicate whether your cat is the issue or not. Its a bummer you have to have this diagnosed by a professioal to get this data since the scanners do not get loaned out.

I have heard of alot of cats that were replaced for no reason because of other reasons so be cautious on how to address this because your not going to be able diagnose this without a data scanner and all the specifications for the sensors.

Posted on Mar 30, 2010

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Gas cap replaced. Ses still on. theres a small amount of water leak on the two bolt flange of the converter to exhaust. is this the reason why the ses light is on ?codep0420? Is it safe to erase it?


That water is just the normal water vapor produced by the action of the Catalytic converter. The P420 code you have indicates the catalytic converter in that bank is either worn out or the sensor is defective. If the car is very high miles then it is very likely both are the problem. To read further on the casue of P0420 follow the link. Trouble Code P0420 Catalyst System Efficiency Below Threshold Bank 1

Jul 14, 2016 | Cars & Trucks

2 Answers

What means catalyst Efficiency below normal


      Got it scanned and it's P0420: Catalyst efficiency below thresholdbank 1. They said it could be a bad catalytic converter or oxygen sensor. I borrowed a scanner and tried to measure the oxygen sensor readings over time.Sep 8, 2011

      civic - Check Engine code P0420 Catalyst efficiency below ...

      mechanics.stackexchange.com/.../check-engine-code-p0420-catalyst-efficie...
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    P0420 Error Code: Catalyst System Efficiency Below ...

    www.obd-codes.com/p0420
    P0420 OBD-II Trouble Code. Technical Description. Catalyst System Efficiency Below Threshold (Bank 1). What does that mean? This diagnostic trouble code ...

    P0420 Code Fix How Its Done Catalyst Efficiency Below ...

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Jan 26, 2016 | Cars & Trucks

1 Answer

Where should i find this sensor P0342?


EXHAUST RELATED ERROR CODES

There are 711 possible PO generic DTC error codes. Only 7 of the 711 codes are exhaust related.

PO401: Insufficient EGR Flow

PO402: Exhaust Gas Recirculation (EGR) Excessive Flow Detected

PO410: Secondary Air Injection System Malfunction

PO420: Catalyst System Efficiency Below Threshold (Bank 1)

PO421: Warm-Up Catalyst Efficiency Below Threshold (Bank 1)

PO430: Catalyst System Efficiency Below Threshold (Bank 2)

PO431: Warm-Up Catalyst Efficiency Below Threshold (Bank 2)

THINGS TO ASK YOURSELF OR YOUR CUSTOMER

Have there been any driveability or performance issues with the vehicle, have there been any recent repairs or tune-up work performed, if so was the check engine light reset and were the codes recorded on previous repair orders.

Do not rely on scan tool data alone. In most applications, the customer will have the check engine light reset prior to repair. If the original cause of converter failure is intermittent, only the catalyst failure code may show up (masking the original reason for converter failure).

Nov 04, 2012 | Chevrolet Epica Cars & Trucks

1 Answer

What does a po430 code mean on a mercury cougar


EXHAUST RELATED ERROR CODES

There are 711 possible PO generic DTC error codes. Only 7 of the 711 codes are exhaust related.

PO401: Insufficient EGR Flow

PO402: Exhaust Gas Recirculation (EGR) Excessive Flow Detected

PO410: Secondary Air Injection System Malfunction

PO420: Catalyst System Efficiency Below Threshold (Bank 1)

PO421: Warm-Up Catalyst Efficiency Below Threshold (Bank 1)

PO430: Catalyst System Efficiency Below Threshold (Bank 2)

PO431: Warm-Up Catalyst Efficiency Below Threshold (Bank 2)

THINGS TO ASK YOURSELF OR YOUR CUSTOMER

Have there been any driveability or performance issues with the vehicle, have there been any recent repairs or tune-up work performed, if so was the check engine light reset and were the codes recorded on previous repair orders.

Do not rely on scan tool data alone. In most applications, the customer will have the check engine light reset prior to repair. If the original cause of converter failure is intermittent, only the catalyst failure code may show up

Nov 04, 2012 | Cars & Trucks

1 Answer

Code po430 came up


P0430 FORD - Catalyst System Efficiency Below Threshold Bank 2

Possible causes- Three way catalyst converter Bank 2 worn out
- Exhaust tube leaks
- Intake vacuum leaks
- Fuel injectors may be faulty
- Fuel injector leaks
- Spark plugs may be faulty
-
-

Oct 08, 2012 | 1997 Ford Taurus

1 Answer

1996 taurus p420 code


The P0420 means Catalyst System Efficiency Below Threshold (Bank 1), and the P0430 means Catalyst System Efficiency Below Threshold (Bank 2).
__________________
ECU unlock immobilizer tool

Sep 17, 2012 | 1996 Ford Taurus

1 Answer

Hard to start


P0430 Catalyst System Efficiency below Limit - Bank No 2" How would I fix that without taking it in? P0430 - Catalyst System Efficiency Below Threshold (Bank 2)
you need a scan tool to monitor the upstream and downstream 02 sensors on bank 2 more than likely its the converter. also check for exhaust leaks before converter . Most times the problem is the Downstream O2 sensor2_bing.gif is defective.

Jun 02, 2010 | 1996 Ford Taurus

1 Answer

I HAVE 2005 FORD TAURUS 3.0 CODE U . I HAVE CODE P0430 ANYBODY LIKE TO HELP


catalyst system efficiency below threshold bank 2
is your car miss firing?

Feb 25, 2010 | 2005 Ford Taurus

2 Answers

Check engine light on. P0325, P0420 2000 Subaru


CODE PO420 CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD BANK I * CODE PO325 KNOCK SENSOR NO.1 CIRCUIT MALFUNCTION BANK NO.1 OR SINGLE SENSOR

Nov 13, 2009 | 2000 Subaru Outback

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