CHECK ENGINE light has been on and off a few times today, did not go into safe mode but luckly did store fault codes.

I have three fault codes.
11. Crankshaft position sensor
13.Camshaft position sensor
22. Knock sensor

Im assuming that just one of the sensors is causing problems and setting off other two but unsure where to start.
I have checked the wiring to each sensor and all plugs are secure.
Any ideas???

 

id reset the ecu first if i were you and see if the codes come back, you may only have one problem and the others are old stored codes

 

Will try that.
I had actually just filled with v power after using esso 97 so mabey that upset it.

 

If it's an early car, check the coil packs for cracks, spiking often causes a string of fault codes.

 

I cant see anything obvious on the coil packs

Its a ver 4 98 sti.
the light hasnt flashed up for a while but after reseting the ecu I still have fault 22. knock sensor so im guess the sensor is faulty.

Does anyone know how to make sure I get the correct sensor?
there seems to be quite a few different suppliers/part numbers

 

Just to update. the knock sensor was changed and has been fine. Engine light has not been on since.
No huge difference but it does feel smoother.