i have a 98 beatle with 5 codes showing

Question

can anyone help me with figuring out what I need to fix or replace from these codes codes are as follows p0141, p0140, p0411, p1580, p0605. or if any of these codes mean the same thing is wrong let me know what to fix or check or replace

Answer 1

P0141 -02 sensor circuit no activity Bank 1 Sensor 2

P0140 - 02 sensor heater circuit Bank 1 Sensor 2

P0411 Secondary air injection system incorrect flow detected

P1580 Throttle actuator B1 Mafunction

P0605 Internal control module ROM error

The 02 sensor codes , this is for the downstream or catalytic convertor monitor sensor, when it is a heater sensor code condition either it has no power to heater circuit the downstream 02 sensor is just non operational, P0411 when at a early or cold start up you would be able to hear the secondary air injection come on if it does come on check the secondary air hose connection these hose connection pop out easily over time.As for P0605 this will cause P1518 and may be the cause of the other code condition