Hello, I would like to ask for an opinion to those who have ever found the code p1340 in this yaris, the defect is irregular idle and bringing the engine to 2000 rpm mumbles, otherwise everything ok no chain noise and the engine pulls well, the decoding error refers to the camshaft sensor (where is it?). Another search makes reference to the variable timing system or cylinder 8 ignition control ?! what do you think?

thanks good day....Paolo