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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15133
Experience:  GM Grand Master Technician 2007. 14 years experience.
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Chevrolet aveo: 2006 Chevrolet Aveo, Manual shift. code p420

Customer Question

2006 Chevrolet Aveo, Manual shift. code p420 changed throttle body, both o2 sensors.
Car is running very good. No misses, good gas mileage and power
Submitted: 1 year ago.
Category: Chevy
Expert:  Stone314 replied 1 year ago.
Good evening my name is***** am going to assist you with your issue.
Expert:  Stone314 replied 1 year ago.
P0420 is for catalyst has degraded below a calibrated threshold. If you clear the code and it returns your cat is failed.