Salah85

Hi Guys,

I have a Lexus GS 300 , 2006 , and I have recently changed both of the catalysts because they were blocked. After changing them, everything was fine until I got a check-engine and VSC lights on dashboard. After reading the codes, I got the following:

1- P0031 Oxygen Sensor Heat Control Circuit Low (bank 1 sensor 1) Current
2- P0031 Oxygen Sensor Heat Control Circuit Low (bank 1 sensor 1) History
3- C1201 Engine Control System Malfunction


I have changed the oxygen sensor (bank 1 sensor 1), but I would still get both the check-engine and VSC lights. Moreover, I have recently started getting some gas smell when driving for long distances ( more than 200 miles), but no codes for this issue.

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Please help.