Why does this combination of codes come up? P1397, P1622, P1529

[gregp1962]

I know that 1397 is Exhaust Cam Position Sensor Malfunction, 1622 is Electric Thermostat Control, Final Stage and 1529 is Exhaust VANOS Solenoid Electrical Fault.

Does anyone have any ideas why these would show up together?

[gregp1962]

I forgot to say. The car is a 1999 328i

[winfred]

id clear them and see what if any come back, none of those really are connected and all are usually hard faults, not like a 02 sensor control or misfire code which points to behavior instead of a bad part

[gregp1962]

Is the cam position sensor a common fault? Is it easy to fix?

[632 Regal]

reboot the computer and see the next code as Winfred says, could be a fluke.

[gregp1962]

Same code keeps coming back. Does that mean that the cam position sensor is bad? Where is this thing?

[winfred]

if it keeps coming back it's probably bad, the cam sensor/sensors read off the sprockets in front of the head

[Bill R.]

I think the part is around 80 bucks from BMA

Is the cam position sensor a common fault? Is it easy to fix?

[gregp1962]

So, is it easy to install? Does anyone have a link to diagrams or anything that tells where it is?

[Bill R.]

.

So, is it easy to install? Does anyone have a link to diagrams or anything that tells where it is?