I have a 2000 GS300 with 144K miles. About 1 month ago I started to hear a rattling / clanking from underneath the car towards the front, sometimes at idle, sometimes under acceleration. I figured it was one of the front pipes but couldn’t really locate it.
Today the CEL came on, and it reads: P0430 Catalyst Efficiency Below Threshold, Bank 2. The performance has not been effected, and acceleration is normal. I do not smell anything abnormal, and the car is running as good as usual. I haven’t used any different gas and always fill it with 89 octane. I live in New Jersey so the car has seen its share of snow & salt. Do you think the cat(s) are bad or could it be a loose or broken pipe? Is the O2 sensor an issue as well?
I’m dreading taking it to the dealer because of the crazy $$$ I’m reading on these threads to get it fixed. I can keep turning off the CEL but it’s probably just going to get worse. Any advice is greatly appreciated...
I have a 2000 GS300 with 144K miles. About 1 month ago I started to hear a rattling / clanking from underneath the car towards the front, sometimes at idle, sometimes under acceleration. I figured it was one of the front pipes but couldn’t really locate it.
Today the CEL came on, and it reads: P0430 Catalyst Efficiency Below Threshold, Bank 2. The performance has not been effected, and acceleration is normal. I do not smell anything abnormal, and the car is running as good as normal. I haven’t used any different gas and always fill it with 89 octane. I live in New Jersey so the car has seen its share of snow & salt. Do you think the cat(s) are bad or could it be a loose or broken pipe? Is the O2 sensor an issue as well?
I’m dreading taking it to the dealer because of the crazy $$$ I’m reading on these threads to get it fixed. I can keep turning off the CEL but it’s probably just going to get worse.
