Hello all!
I have a 2007 dodge caliber, 110k miles.
Recently, I've scanned it with OBD2 module and it shown some faults.
P0139 - Powertrain - O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
P0420 - Powertrain - Catalyst system efficiency below threshold (Bank 1)
From that I've understood that it's required to replace the calaytic converter and both of the lambda sensors.
I've also checked the catalytic temperatures (Cat B1S1) - is 603 F and the other one (Cat B1S2) not showing up at all.
As I've understood it is required to replace the catalytic converter together with lambda sensors.
I've checked with the local repair shop, they suggest to cut out the current catalytic converter, weld on inside two pipes and then take it to automotive electrician so he will reprogram the ECU to work.
Personally, I think it's some overkill.
Would be glad to hear your opinion on this.
To make it work as it was designed at a minimum you'd have to change the sensor and the cat on that one side. But depending on local laws some places they just remove the cats entirely and they run perfectly fine lights will come on but car will run fine.the only thing the catalytic converters do is burn on burn hydrocarbons that is their only purpose
@scottykilmer
Thanks for the answer.
Is it possible that this catalic converter can lead to flameout? Few months ago I had a stop at traffic light and when it became green, as soon as I've pressed the acceleration pedal the engine shutted down as if there was no fuel left. But it started normal after this and had no problems with it ever since, only these errors and gas smell in my garage.