Engine light, vsc off, trc

[Andyjk]

Hi, the engine light and trc light are illuminated on my IQ3(61) and the vsc light is constantly flashing. I have had a service and the mechanic changed the lamber/oxygen sensor thinking it would remedy the fault, as that was the fault showing up on the computer. 20miles later and same problem has returned. We both at a loss. The car drives the same but the fuel consumption is terrible. Any help greatfully received. 

[Andyjk]

On 5/3/2018 at 9:51 PM, Andyjk said:

Hi, the engine light and trc light are illuminated on my IQ3(61) and the vsc light is constantly flashing. I have had a service and the mechanic changed the lamber/oxygen sensor thinking it would remedy the fault, as that was the fault showing up on the computer. 20miles later and same problem has returned. We both at a loss. The car drives the same but the fuel consumption is terrible. Any help greatfully received. 

Hi I still have this problem, has anyone else involved with toyota had this issue

[justtheticketIQ]

Don't know if you ever found a solution to your problem. I have the same problem - after a flat Battery. Everything has been checked, but no parts replaced seem to resolve the problem...any suggestions?