On the Fiat Egea, catalytic converter (catalytic converter) failure usually shows the P0420 code (Catalyst System Efficiency Below Threshold). We clear it, and after one drive cycle it comes back. Is there an easy solution?
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1 repliesChief, the problem could be in 2 places, get it checked - either your oxygen sensor is faulty, or if there's an exhaust leak on the car it can clog the catalytic converter. If your car has an eco mode, I wouldn't recommend using it in the city - on Egea models, eco mode in city driving causes the catalytic converter to clog. Also, if the catalytic converter clogs, the car will show increased fuel consumption. BEST REGARDS..
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