Tuesday, February 21, 2012

OBD code P0301,P0430 and P0174?

This is noticed on Lexus Ls430 car.It has run more then 300000 miles.
First the error code P0301 came.Its a number 1 cylinder misfire error code.The customer tested the cylinder and replaced the number 1 cylinder, but still obd code P0301 is coming up and including that error code P0430 and P0174 also came.This other two codes came after cylinder 1 was replaced.Previously only one misfire code P0301 was there.

On basis of that the troubleshooting for the problem is as follows :-----


As far as the answer goes regarding the P0301 code that probably would be difficult to determine given everything you've done and using propane and gasoline combinations. Short of doing a cylinder compression test that's about the only thing I see that you have not done. The cylinder compression should show approx 180psi.

The P0430 code means the catalytic converter for bank two has failed. This could be a false code because the P0174 code is indicating a lean condition. On bank two when this happens it can cause problems in the catalytic converter and could be setting this code because the rear 02 sensor is not functioning correctly due to the lean condition. Catalytic converter failures with this kind of mileage is not uncommon. Any cylinder misfire causes unburned fuel to be burned in the catalytic converters. This is what actually damages the converters. Because cylinder one is the one that has been misfiring you would think it would be setting a P0420 code which is the catalyst efficiency code for bank one.

Also i suggest try cleaning the mass airflow sensor and make 100% certain that you have no intake leaks that could be directing unaccounted for air into bank two. This is the opposite bank that hold cylinder number one that your misfire is in. If you continue to drive the vehicle with the cylinder one misfire and the check engine light starts to flash you will eventually damage bank one converter.

This details will help you to troubleshoot the issue and confirm the problem.So you can go for repairing in that way.

Thanks.

See below latest solved car problems :-----


Diagnostic code P1330 on Kia 2WD Sorento?

http://technoanswers.blogspot.in/2012/02/diagnostic-code-p1330-on-kia-2wd.html

Diagnostic code P0700, P1330, P1121 on KIA?

http://technoanswers.blogspot.in/2012/02/diagnostic-code-p0700-p1330-p1121-on.html

2003 Kia Sorento shows error code P1330?

http://technoanswers.blogspot.in/2012/02/2003-kia-sorento-shows-error-code-p1330.html

OBD code P1330 on 2003 Kia Sorento?

http://technoanswers.blogspot.in/2012/02/obd-code-p1330-on-2003-kia-sorento.html

OBD code P01300 on Toyota RAV4?

http://technoanswers.blogspot.in/2012/02/obd-code-p01300-on-toyota-rav4.html

OBD code P0768?

http://repairhelpcenter.blogspot.com/2012/01/obd-code-p0768.html

Evaporative Emissions System codes details?

http://schematicsdiagram.blogspot.com/2011/11/evaporative-emissions-system-codes.html

           

Engine Misfire codes on Chevrolet Malibu?


Misfire on cylinder 4?

ABS trouble codes for all 1994-00 Acura models?

Diagnostic code P0010?

http://schematicsdiagram.blogspot.com/2011/12/diagnostic-code-p0010.html

Diagnostic Code P1396?


Code P0452?


OBD code P0172 on Buick Park Avenue?


DTC Code P0321 on Buick Park Avenue?

                      

Error Code P0471 on 2007 Dodge Ram 3500?


P0304 Error code on Dodge Neon?

                     

OBDII scan is receiving NO BUS CODE?


How to Clear OBD error Codes on Acura Car Models?


Diagnosis and Testing Car Components?

Diagnostic Trouble Codes list for Acura Car Models?

Part 1.

Diagnostic Trouble Codes list for Acura Car Models?

Part 2.

OBD Code is cleared but check engine light will not RESET?

Diagnostic Code 43 and 71 on 1991 Toyota Pickup?


Code P0132 On Acura TL?

P0031 code on Dodge Dakota?

How to get diagnostic Code without OBD Scanner on Pre 1995 Toyota Pickup?

OBD-II Trouble Code P0300?

Getting diagnostic code P0016?

How to Read Codes from Check Engine Light?

Diagnostic Code P0540 continues to return and the MIL light is on?

DTC Trouble Code P0401?

Car misfires and error code P0306 and P0303 is shown?

Diagnostic code P0463 on Ford F250?

Check engine light with codes P2195 and P2197?

Diagnostic error code P0121,P0505,P1000,P2101,P2104, P2110,P2135,P2106 on Ford F150?

P0174, P0037 and P2197 on Toyota RAV4?

P0352 Obd code on Toyota RAV4?

Error code p0402 on Ford Escape?

Obd Code P0763 on Lexus?

http://technoanswers.blogspot.in/2012/02/obd-code-p0763-on-lexus.html


No comments:

Post a Comment