0
What is P0430 code and how do you fix it on Chevy Silverado 4.8?
Wiki User
∙ 12y ago
Trouble code P0430 means: Catalyst System Low Efficiency (Bank 2)
I have a 5.7L V8 in my Silverado, but the code meaning is the same. There are
oxygen sensors before and after the catalytic converter. By measuring the oxygen in
the exhaust gasses before and after the cat, the computer assessed whether or not
the cat is doing its job.
In this case, it's telling you that it's not. BUT it may not be a bad catalytic converter. It could
also be caused by either or both of those two oxygen sensors going bad, or by exhaust
leaks. Those things will also cause O2 readings to the computer that are bogus and make it
think the cat isn't working right.
There are two catalytic converters. I think bank 2 is the one on the right (as you sit in the car looking forward).
I have the same problem on my 2000 Chevy silverado 1500. I changed the 2 sensor on the right pipe but problem is still the same.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
How do you fix codes P0430 P1131 on a Mercury Grand Marquis?
Code p0430
How do you fix the po446 code on a 2001 Chevy silverado?
ow do you find out where the parts are on a 2001 silverado for the emission control system
How do you fix the tail lights on an 89 Chevy Silverado?
I have a 1999 chevy Silverado how to fix my day time running lights
How do you fix engine light code PO455 on Chevy silverado 1500?
How can I repair the code po455 on my 2006 Chevrolet Silverado after replacing gas cap evap-canistor and a leak in a vacuum line.
98 Chevy silverado k1500 transmission code p1870 how do you fix the problem?
Rebuild trans. Pay someone to do it too.
How can I fix the bass in my Chevy Silverado?
How can I fix the bass in my Chevy Silverado by cleaning the terminals, cleaning any rust found, and and tape up the terminals if necessary.
How do you fix the OBD II code P1111 ON A 2000 Chevy Silverado?
Trouble code P1111 means: IAT Sensor Circuit Intermittent Voltage High
Location of wiper relay 03 silverado and replace?
how to fix wiper relay Chevy silverado 03
What is the fix for 2003 Chevy silverado code PO446?
Check your charcoal fuel canister. I had the same problem changed the light went out. The problem fixed.
How do you fix horn on 2002 Chevy Silverado?
Vortec V-6
How do you fix the horn on a 2001 Chevy Silverado 2500 4X4?
It has to be checked out and find out what is wrong with it.
What does enginecodes po420 po430mean dealer says conv needs replaced true.?
I also have a "service engine soon" code P0430 showing in my 2001 Tracker 4 wheel drive. I need to know what this code means so I don't have to pay for the diagnostics test again to fix it. My car is overheating when it idols and I'm unsure if the engine fan is going out or if this is due to the P0430 code.
