Question about 2003 Mitsubishi Eclipse Spyder

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01 Eclipse GT - bad o2 sensor heater circuit (bank 1 sensor 2)

I would like to know if I can replace this sensor myself and how can I identify it's location.

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  • yadayada
    yadayada May 11, 2010

    Yes it is easy to replace.

  • Anonymous Mar 14, 2014

    bought 4 o2 sensors for 2003 Mitsubishi eclipse gt. 2 of them have different plug ins than what is on the car!

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Your question was truncated. I see that the bad sensor is on bank 1, but I can not see if it is the upstream (sensor 1) or downstream (sensor 2) sensor. The upstream sensors are mounted in the exhaust manifolds (look sort of like spark plugs) and have wires going to them.
You will need a 7/8" or 22mm wrench to remove the sensor (after disconnecting the wires). If your car has over 70,000 miles I STRONGLY suggest that you replace BOTH upstream sensors. One in each exhaust manifold.
Charlie

Posted on Dec 23, 2008

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There is two of them usally one you can replace with no problems and the other is under the car after the s pipe i recommend you buy the one for your car so you dont have to splice the pigtails

Posted on Dec 23, 2008

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1 Answer

Acura rdx 2008 : I got this message : P0135. I want to change it myself but i dont know where is the O2 sensor heater circuit malfunction ( bank 1 sensor 1 ). Could you let me know it? Thank you.


code p 0135 refers to heated oxygen sensor (HO2S) 1 bank 1 heater control--circuit malfunction===causes --fuse--wiring-- HO2S-- ECM
bank 1 is closest to the firewall and HO2S sensor is in the exhaust manifold bank 1 before the cat converter
it is not an O2 sensor as they are totally different to the heated sensor
most problems can be traced to the wiring or the HO2S unit as the wires are fine and subject to failure
when getting the new unit , also invest in the correct tube socket to use with sensors as they are designed to protect the wiring during installation and removal

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My 03 Ecl Spy GT didn't pass CA smog test? OBD II and OBD Bulb check. Ser Fault Codes: P0136- P0141-P0431-P0455.


I'm sorry you replaced the parts without testing first. Codes only give mechanics a suggested area to test, not which components to replace.
Since you replaced the O2 sensor for the first two codes, a mechanic will need to check to see if it is working by reading the data flow from the sensor with a scanner while the engine is warming up. The catalytic converter will also need to be tested to troubleshoot code 431.
Code 455 is for a leak in the evap system which is what vents the gas tank to the vapor canister. The system will need to be pressure checked for leaks and then repaired.
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Sep 04, 2015 | 2003 Mitsubishi Eclipse Spyder GT

2 Answers

Trouble code p0134, p0135 p0053 p0030


P0134 - O2 Sensor Circuit No Activity Detected Sensor 1 Bank 1
P0135 - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0053 - O2 Heater Resistance Bank 1 Sensor 1
P0030 - O2 Heater Control Circuit Bank 1 Sensor 1
You need to replace the O2 Sensor Bank 1 Sensor 1
Carquest can help you get the correct part and help you locate it.

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2007 Mitsuibishi Eclipse GT


If this is a V6 model, Bank 1 would indicate one side of the motor. Also, if it's the V6 model, I believe there are 3 O2 sensors, one per Bank, and one downstream(post-cat). If it is the V6 model, and it indeed is Bank 1, then just replace the O2 sensor, that's the most likely cause.

Jan 04, 2018 | 2007 Mitsubishi Eclipse GT

1 Answer

Hello, I have a 2000 Mitsubishi Eclipse GT V6 3.0 that the service engine light soon has come on. A mechanic put his diagonistics machine on it and the error code P0135 - Heater circuit, bank 1 sensor 1. I...


it is not an O2 sensor but a heated oxygen sensor that is in the exhaust manifold before the cat converter
heated oxygen sensor(HO2S) 1 bank 1 is the one against the fire wall
it is not a heater as such but has an internal heating system so that it reads the exhaust emissions correctly and adjusts the air /fuel settings in the ECM
normally has 4 wires
the oxygen sensor (O2S) is after the cat converters and is a completely different sensor to read a different exhaust gas

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1 Answer

My truck's reading p0135, what is that?


PO135> O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
Up stream Oxygen Sensor on the same side as cylinder number 1
has a bad heater grid
Replace sensor> clear code > test drive

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1 Answer

P134, p0141, po300, po130 and po135. 2005 Sunfire.


Given that most of the trouble codes are for the O2 sensor, I think I would change it. The multiple misfires could be because of improper fuel/air mixture caused by a bad sensor. Disconnect the negative(-) battery terminal then change the sensor. Disconnecting the negative(-) should reset the computer and allow the fuel/air mixture to return to default allowing the engine to start.
P0130 - O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)
P0134 - O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
P0135 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
P0300 - Random/Multiple Cylinder Misfire Detected

Jun 16, 2010 | 2005 Pontiac Sunfire

1 Answer

More 99 cougar problems


there is a fuse for the o2 heaters if one of the sensors blew the fuse they will all be out

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I have an '01 Galant LS. I got an engine code "O2 Sensor Heater Circuit (Bank 2 Sensor 1)". I have replaced O2 sensors before, but I don't know where this sensor is on this engine. Can anyone...


I have an '01 Galant ES USA. I got an engine code & quot;P0135 O2 Sensor Heater Circuit (Bank 2 Sensor 1) & quot;P0443-Evap Emiss Control System. Purge Control Valve Ciro. I need a good service centre that can fix this for me and do the servicing of the engin. Can anyone give me a hint?

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