Question about Mitsubishi Montero

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EMISSION FAIL CODES PRESENT P0155 - Montero Mitsubishi Cars & Trucks

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P0155 - Heated Oxygen Sensor Heater Circuit (bank 2, sensor 1)

bank 2 sensor 1 (front, driver side) o2 sensor needs to be replaced

Posted on Oct 15, 2008

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P0155 is for the 2/1 oxygen sensor heater failure...this is the upstream oxygen sensor on theside of the engine the #2 plug

Posted on Oct 15, 2008

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02 Chevy blazer p0155,p0446 codes. What to do?


EVAP Evaporative Emission Control System .follow this link for the P0446 fault , this is a problem with the Engine Evap valve , this link describes in detail the system etc. The other code P0155 is for the Front Oxygen sensor bank 2 , this could be a faulty wiring connection or the sensor its self so further diagnosis will be required .I would advice using a good quality fuel addative , one that covers the catalytic convertor as well as the usual engine parts, injectors etc as there may just be build up of carbon on the sensor that is restricting the signal being recieved , keep me posted if you wish

Feb 01, 2015 | 2002 Chevrolet Blazer

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What else, Check Engine Light, P0505, p0135, p0155, p1494 codes?


You can not work on a vehicle as your doing

Your checking for generic codes only & throwing
parts at it

You get a couple possible worn or failed parts & have
a few less codes

There is no need to clear ALL Data every time you change a part

You need to STOP

You need professional scan tool software to look at ALL data & go for a road test first

You keep clearing stored data ,so now the process will take longer

You work one code & one system at a time

NO PARTS get replaced that are not tested & found to fail
a test,thus a worn out part.

You need both Factory Emission & Diagnostic Manual, as well
as Wiring Diagram Book-- BEFORE-- you can even walk to the vehicle (Helm.Com)

You have nothing to go by,no system knowledge & no trouble charts,& no wiring diagrams to start your testing

If you got no scan tool & no volt meter & no oscilloscope,
your done,vehicles have to be tested to find a problem,any
problem,resolve it & continue on.

May 19, 2014 | 2004 Jeep Grand Cherokee

1 Answer

Ford f150 codes p0155,p0401 and p0301


P0155: O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
P0301: Cylinder 1 Misfire Detected
P0401: Exhaust Gas Recirculation Flow Insufficient Detected

Aug 09, 2013 | Ford F-150 Cars & Trucks

2 Answers

Check enegine light stay s on all the time, here are the codes im getting, if someone could tell me how to fix these that would be great. p0155 p0141 p0136 p0443 p1451 p0135 p0161 p1409


P0155: O2 Sensor heater Circuit Malfunction (bank2 ) Sensor 1.

P0141: O2 Sensor heater Circuit Malfunction (bank1 ) Sensor 2.

P0135: O2 Sensor heater Circuit Malfunction (bank1,Sensor1)

P0136: O2 Sensor Circuit Low voltage (bank1) Sensor 2.

P0443 : Evaporative Emission control System Purge control valve.

P1451: Eavporative Control System Canister vent solenoid Circuit Malfunction.

P0161: O2 Sensor Circuit Low voltage (bank2,Sensor2)

P1409: Electronic Vacuum Regulator (EVR) control circuit malfunction.

change the O2 sensors first,Then check the the EGR Vacuum regulator for any Malfunction. Good luck

Jan 14, 2011 | Ford Mustang Cars & Trucks

1 Answer

1997 Maxima getting codes P0150, P0155 changed O2 sensor still getting codes after erased and driven... please Advise


CODE P0155 IS O2 HEATER FAULT MOST LIKELY CAUSE IS WIRING, GROUND CONNECTIONS ,POSSIBLE ECM .

Aug 06, 2010 | 1997 Nissan Maxima

1 Answer

Emission test found some trouble codes


U0121 Communication error to ABS HU/CM

Apr 06, 2009 | 2005 Mazda 6

1 Answer

P0155 & P0135


O2 sensors are tricky. sometimes like anything else they fail. many times though the exhaust mixture they encounter is out of their range and that shows up as a failure.since you seem to have no other problems , I would go ahead and change them, but don't be disappointed if the code shows up again (at least you know it's not the sensors.) I don't like using the process of elimination when doing repairs but sometimes you must.

Mar 15, 2009 | 2004 Jeep Grand Cherokee

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