Smog test only p0420 catalyst efficiency below threshold?
Anyone knows what is p0420 catalyst efficiency below threshold(bank1)
and air injection failed
How much if i replace it?
This doesn’t exactly mean you have a bad converter. A failed rear oxygen sensor could cause this also. But if it is the converter, they have a federal warranty of about 80,000 miles.
September 29th, 2009 at 2:17 pm
Make/Model of car would help.
The code means your catalytic converter is bad. Replacement cost varies greatly depending on make/model of car.
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September 29th, 2009 at 3:04 pm
BETWEEN $150.00 TO $350.00 DEPENDING ON THE VEHICLE.
TRY FINDING AN INDEPENDENT SHOP INSTEAD OF THE DEALER OR A CHAIN STORE BECAUSE YOU WILL BE OVERALL MORE PLEASED WITH THE FINDINGS AND THE SERVICE.
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923
September 29th, 2009 at 3:52 pm
This doesn’t exactly mean you have a bad converter. A failed rear oxygen sensor could cause this also. But if it is the converter, they have a federal warranty of about 80,000 miles.
References :
September 29th, 2009 at 4:15 pm
Diagnostic Code P0420 - Car Forums and Automotive Chat
Car Forums Diagnostic Code P0420 F-Bodies (Camaro and Firebird) … was a P0420 Code which is defined as "Catalyst System,Bank1 Efficiency Below Threshold" …www.aEmission Control: Air Injection
Air Injection. Catalytic Converter. EGR & Related Components … the air injection system include a failed emissions test, a broken air pump belt, …www.carcare.org/Emission_Control/air_injection.shtml - 12k - Cachedutomotiveforums.com/t176433.html - 21k - Cached You need a new cataylytic converter you’ll have to get shop to do this. Call around and get the best price.
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