Check engine light came on. Diagnostic code P0420. Failed emissions. on 2005 Acura RSX

Is this a sensor or does the cat. converter need to be replaced altogether? Check engine light came on, code P0420, failed emissions inspection.

by in La Vergne, TN on May 27, 2011
1 answer
ANSWER by , May 27, 2011
In most cases when code p0420 sets the catalytic converter requires replacement. Please use the RepairPal estimator to find out what the cost should be. Here is a link - https://repairpal.com/estimator?car_type_id=4292