Df 300 fault codes

Hi Guys.My 300 is showing 8.3 and 4.2 fault codes intermitently.Last trip one motor started to loose power and eventually switched off.Afterwards started ok but down on power.I bought them used and had to reset controls (double station).I've replaced all batteries and suspect filters need to be replaced.Hope you can help.

The 4.2 is the crank position sensor

There is no 8. 3 code

does crank pos. sensor work off the flywheel teeth?

To cancel the diagnostic display of CKP sensor, perform the following procedures after the failure has been corrected: (1) Start the engine. The diagnostic code for CKP sensor failure will continue to be displayed until a normal signal sequence is received by the ECM. Thereafter only the display being conceled. At this stage of the diagnostic system reset process the diagnostic code for a failed CKP sensor is not displayed but the engine is still controlled using the CMP sensor signal. (2) Stop the engine and restart. At the second restart, complete canceling of the CKP sensor failure code will occur.

Thanks.Will let you know how it goes.Where can i find year model? DF30001 F 781763?I want to order new sensor.
Regards.

2007 motor

Thanks.Will let you know how i fare.Regards.

Yepser

Switch out the good one with the one you think is bad to confirm it's the sensor.