Lxs &Toy ota 0 Report post Posted July 30 Hi Community, I own a LS430 2001. For a couple days now I do have rough idle and the VSC / Engine Warning light. After my initial analysis I found a bad ignition coil Connection. After that was fixed the car ran fine for 3000 miles. Now the same Problem came up - Rough idle and lack of power in low rpm (in kick-down it seems to be okay) . The obd2 says ist P0401. I already swapped the spark plugs and the forward O2 sensors. But it still is Rough idling. I 'd appreciate any suggestions before changing anymore things? I wanted to swap the rear O2 sensors already, but due to the availability of these I my question is if they are the same than the front ones or is there a difference besides the connector ? Is there a way to check them? thanks for your help greets from Europe Quote Share this post Link to post Share on other sites
Lxs &Toy ota 0 Report post Posted August 2 anyone ? Quote Share this post Link to post Share on other sites
Lexus Owners Club 4 Report post Posted August 8 Hi Mark You could possibly ask this question through the UK Toyota Owners Club forums (same club but UK based members) You may get some answers there. https://www.lexusownersclub.co.uk/ Quote Share this post Link to post Share on other sites
Lxs &Toy ota 0 Report post Posted August 13 Thanks Admin, I'll do that. I dont understand the difference though. Are Brits more helpfull? Anyway, thanks Quote Share this post Link to post Share on other sites
