Question about 2004 Isuzu Rodeo

1 Answer

PO420 CODE CAT EFEC - 2004 Isuzu Rodeo

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Isuzu Master
  • 450 Answers

This can usually be set due to front O2 sensor malfunction
even though reading from front O2 sensor looks normall and not setting a code, its not reading correctly replace the front O2 sensor

Posted on Jun 26, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Engine light code po420?


Code 420 refers to the catalytic converter in the exhaust pipe.
The code means the engine computer things the cat is not working correctly based on the data coming from the O2 sensors.
The sensors and the cat would need to be inspected.

Nov 17, 2015 | Chrysler Pacifica Cars & Trucks

1 Answer

Does pouring alcohol in the gas tank turn off the trouble code for a 2000 Cadillac deville with the code of p0420.


. NO it will not . code po420 refers to cat converter system , bank 1--efficiency below threshold===causes cat converter---wiring--HO2S 2

Have the cat converter checked for failure and replace if necessary. Check the operation of the heated o2 sensor before that cat converter.

Jul 28, 2014 | Cars & Trucks

1 Answer

I've been reading on po420 po430 codes for all


Bank 1 is side no 1 cylinder is located on bank to is opposite Sensor 1 before cat sensor 2 after

Jan 27, 2018 | 2002 Chevrolet Silverado 1500

1 Answer

Code po420 on scan tool but o2 sensor was replace 2 months ago


Hello and welcome. the code P0420 is for a bad cat. converter. replacing 02 sensors wont repair this code. the code simply's means that thje cat. converter is not working as designed and will need to be replaced.

The PCM determines the oxygen storage capability of the catalytic converter has degraded below a calibrated threshold.

Jul 03, 2010 | 2004 Mazda RX-8

2 Answers

PO420 code-service engine light is on


P0420 Catalyst System Efficiency Below Threshold (Bank 1) first thing to do is go back to basics do a tune up (plugs) check the plug wires spray them with water or windex if you get a miss change them, run some fuel injector cleaner through it, don't just throw parts on it ,that is'nt cheap

Mar 24, 2010 | 2002 Nissan Altima

2 Answers

Check engine light on PO420 code ? recalls


Huge problems with these cars. The Pre-cat converter is built into the exhaust manifold. Expensive to replace. No Recall on this item. Some say that inferior compounds in the catalyst cause corrosion and early wear of the piston rings. I have seen one of these use 5 qts of oil in 300 miles. Is this car using excess oil?

Jan 16, 2010 | 2005 Nissan Altima

3 Answers

1998 saturn check engine lite comes on gives codepo420&po573


Code po573 is cruise control / brake switch circuit A circuit voltage high PO420 catalyst system below threshold, po573 is probably a bad brake circuit / switch problem, PO420 is a bad catalatic convertor for bank 1

Sep 28, 2009 | 1998 Saturn SC

2 Answers

Fault code po420 ; is problem sensors or is it the cat conv


The only thing that will set this code is the catalytic converter or the oxygen sensor behind it. Way to tell if it is the sensor is to monitor voltage reading with scan tool and see if it is fluctuating the same as the upstream oxygen sensor. If it is the converter is "free flowing" and will have to be replaced. If the sensor is "flatlined" then it is most likely bad and setting the code.

Apr 30, 2009 | Ford Fusion Cars & Trucks

1 Answer

The code PO420 came on for my 2000 Toyota Camray ......


Catalyst Effeciancy below threshold (Bank 1) is the code meaning. Check or replace the oxygen sensors. Some cars have 2 .One is on the front of the cat. the other is the on the back. Check the back sensor . Other possible causes are leaking or damaged exhaust manifold, bad coolant temp sensor.If toyota did not replace both . replace the one on the back of the Caty.

Feb 02, 2009 | 2003 Toyota Corolla

Not finding what you are looking for?
2004 Isuzu Rodeo Logo

Related Topics:

347 people viewed this question

Ask a Question

Usually answered in minutes!

Top Isuzu Experts

yadayada
yadayada

Level 3 Expert

80263 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

14417 Answers

Are you an Isuzu Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...