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I have a lancer 2003, i have a p0421 p0135 i change bank 1
i have a p0421 p0135 i change bank 1 sensor oxigen i yust ut a new 1 … read more
Peter Bagley
Peter Bagley
master technition
Vocational, Technical or Trade School
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The service engine soon light is on and the car lags in low
The service engine soon light is on and the car lags in low rpm range … read more
Dan
Dan
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Mitsubishi GLX: I am considering buying a second hand 2007
I am considering buying a second hand 2007 Mitsubishi Triton (GLX twin cab 6 cylinder petrol 3.5 litre rear wheel drive), but I'm told by the owner that it will need a new left hand side catalytic con… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
I have a 2006 Lancer and this code came up when trying to get
I have a 2006 Lancer and this code came up when trying to get my car inspected. (It was bought in Florida - no inspections there and now live in NY) The first repair shop I took it to told me I needed… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
CAN I CONVERT MY 2002 MITSUBISHI LANCER MANUALTRANSMISSION
CAN I CONVERT MY 2002 MITSUBISHI LANCER MANUALTRANSMISSION TO AN EXTERNAL STYLE SLAVE CYLINDER… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
Mitsubishi Mirage LS: Hi there, My 2001 Mitsubishi Mirage
Hi there, My 2001 Mitsubishi Mirage 1.8, 2 door Coupe, recently had a P0421 code and two weeks later, it now has a P0401 Code. Is the P0421 and P0401 code related in the sense that if the catalalytic … read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
Mitsubishi galant ES: I have a 2005 Mitsubishi Galant ES with
I have a 2005 Mitsubishi Galant ES with 118,768 miles. I got a code P0421. I have replaced all 4 oxygen sensors.The code still returns then goes off for about 2 weeks and comes on again. Vin # XXXXX… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
I have a 2007 Mitsubishi Endeavor with about 89,000 miles.
I have a 2007 Mitsubishi Endeavor with about 89,000 miles. A while back, the service engine soon light came on and sporadically went off and on. Basically, when I filled up with gas the light would co… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
Mitsubishi Lancer Oz Rally: I recently got a diagnosis on my
I recently got a diagnosis on my 2003 Mitsubushi Lancer about a month ago and it said warm catalyst efficency banl 1 below thershold. i'm assuming it to be the converter in the engine since last year,… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
lancer: my 2003 es..engine light came..was my o2 sensor...oem
I put a magnaflow high flow cat on my 2003 es lancer an ever since then my engine light came on.. I got it checked an they said it was my O2 sensor.. I got it changed but the light is still on.. Any s… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
lancer oz rally: 2 days later engine light comes on and spits..recall
just purchased a 2005 mitsu lancer oz rally. of course 2 days later engine light comes on and spits out a p0421 code. internet research indicates a pcm reflash recall. My question is considering a cat… read more
Eric
Eric
Retired
N/A
42,110 satisfied customers
2003 mitsubishi lancer: check engine light..front catalytic converter
Hi I have a check engine light on in my car, took it to the mechanic and they said it was the front catalytic converter. I own a 2003 mitsubishi lancer 4.0 2 liter engine. They said that the cost to r… read more
HondaPlatinum
HondaPlatinum
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2003 Mitsubishi Lancer: trouble code..Warm..catalyst..below threshold
I have a 2003 Mitsubishi Lancer. It shows the following trouble code P0421 Warm up catalyst efficiency below threshold Bank 1. could someone explain what this means and a possible solution. Thanks for… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
2002 Mitsubishi Lancer ES: p0304..I recently changed plugs and wires
Can you tell me which is cylinder 4 in a 2002 Mitsubishi Lancer ES? I get a P0304 code, Cylinder 4 misfire, and I am unable to determine which is cylinder 4. I recently changed plugs and wires, had ab… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
2002 Mitsubishi Lancer ES: it failed emissions..trouble code..recall
I have a 2002 Mitsubishi Lancer ES and it failed emissions. They said the trouble code was P0421 and that there was a Mitsubishi recall on this. I got a recall notice in 2008 about a C0505JS problem. … read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
Lancer: I recently had my 2002 mits..inspected..p0135..o2 Sensor
I recently had my 2002 Mits Lancer inspected and failed due to codes P0135 and P0421. I brought the car to a Mits Dealer and was told those codes meant I needed $1399 in repairs: An O2 Sensor (B1 S1) … read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
2006 Mitsubishi Lancer ES: 000 miles..Runs great. Service engine soon
I have a 2006 Mitsubishi Lancer ES with 112,000 miles on it. Runs great. Service engine soon light recently came on. Took car to dealer who said the catalitic convertor was going bad and need replaced… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
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2005 Mitsubishi Galant: The Check Engine Light Keeps coming on, and we
We bought a 2005 Mitsubishi Galant for our daughter. The Check Engine Light Keeps coming on, and we have had it checked a couple of different times, and they tell me that the code is for the catalytic… read more
Gary
Gary
Vocational, Technical or Trade Scho
15,858 satisfied customers
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Meet the Experts:

Doug

Doug

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Chris (aka- Moose)

Chris (aka- Moose)

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George H.

George H.

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ASE Master tech 15+ years

Tim Mohr

Tim Mohr

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Don - Mo Lurch

Don - Mo Lurch

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AMD

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BigBob

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