2005 mpv: P0421
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Junior Member
Joined: Sep 2019
Posts: 1
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From: Portland
2005 mpv: P0421
Hi everybody,
I have been trying to figure this issue out without dumping lots of money for the diagnosis, but i can't nail down an answer.
My fear is that i have a bad catalytic converter. A friend of mine who used to be a mechanic seems to think it just needs new O2 sensor. Either way it's a hell of a job, as I believe it's bank 1 which appears to be extremely difficult to access.
All the shops in my area say that it would cost between $800-1,500 to do this job if it is the catalytic converter. The latter is half the value of the vehicle.
I really just want to sell this thing before more stuff goes wrong, but I have to get this fixed in order to sell it.
I have been trying to figure this issue out without dumping lots of money for the diagnosis, but i can't nail down an answer.
My fear is that i have a bad catalytic converter. A friend of mine who used to be a mechanic seems to think it just needs new O2 sensor. Either way it's a hell of a job, as I believe it's bank 1 which appears to be extremely difficult to access.
All the shops in my area say that it would cost between $800-1,500 to do this job if it is the catalytic converter. The latter is half the value of the vehicle.
I really just want to sell this thing before more stuff goes wrong, but I have to get this fixed in order to sell it.
Junior Member
Joined: Sep 2019
Posts: 15
Likes: 0
From: 1511 Willow Greene Drive
Hi everybody,
I have been trying to figure this issue out without dumping lots of money for the diagnosis, but i can't nail down an answer.
My fear is that i have a bad catalytic converter. A friend of mine who used to be a mechanic seems to think it just needs new O2 sensor. Either way it's a hell of a job, as I believe it's bank 1 which appears to be extremely difficult to access.
All the shops in my area say that it would cost between $800-1,500 to do this job if it is the catalytic converter. The latter is half the value of the vehicle.
Review the best bluetooth obd2 scanner at Autoguysland if you want to get one.
I really just want to sell this thing before more stuff goes wrong, but I have to get this fixed in order to sell it.
I have been trying to figure this issue out without dumping lots of money for the diagnosis, but i can't nail down an answer.
My fear is that i have a bad catalytic converter. A friend of mine who used to be a mechanic seems to think it just needs new O2 sensor. Either way it's a hell of a job, as I believe it's bank 1 which appears to be extremely difficult to access.
All the shops in my area say that it would cost between $800-1,500 to do this job if it is the catalytic converter. The latter is half the value of the vehicle.
Review the best bluetooth obd2 scanner at Autoguysland if you want to get one.
I really just want to sell this thing before more stuff goes wrong, but I have to get this fixed in order to sell it.
Junior Member
Joined: Apr 2019
Posts: 4
Likes: 0
From: ontario
I had this issue with a 2002 mpv. I bought the sensor for a decent price but could not do the repair myself. Several garages wouldn't do the repair unless they supplied their own O2 sensor. The sensor was just over a hundred cdn and the job would likely take an hour so I can't see a bill for $1500 being likely. Of course the issue in this area is often rust which may mean new exhaust parts but still...1500!!
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