I just pulled the codes off the internal code reader of my 94 850 turbo and got some troubleing codes... 3-1-4 which my book says is cam shaft position sensor absent. But I just installed a brand new, out of the box 1 from Auto Zone. Also 3-2-5 Which is ECU memory loss... not sure what this means or implies. Are these bad? I know in people memory loss is bad... but what about in cars?

 

Did you clear the codes after you installed the new sensor?


Code 3-1-4 (Camshaft Position Sensor Signal)
1) Check for other codes. If no other codes are present, go
to next step. If Codes 1-2-3, 4-1-1, and possibly 4-1-3 are stored,
check TP sensor, ECT sensor, camshaft position sensor, and EGR
temperature sensor connection at ECM connector terminal A18 for signs
of contact resistance and oxidation.
2) Using Volvo Scan Tool (998-8686) check status message to
determine whether fault is permanent or intermittent. If fault is
permanent, go to next step. If fault is intermittent, go to step 12).
3) Turn ignition off. Wait about 2 minutes. Disconnect
camshaft position sensor. Connect an ohmmeter between camshaft
position sensor connector terminal No. 1 and ground. If ohmmeter reads
about zero ohms, go to step 5). If ohmmeter does not read about zero
ohms, go to next step.

Code 3-2-5 (Memory Failure)
Check wiring between ECM terminal A26 and battery positive
terminal for an intermittent open circuit. Also check ECM connector
and battery positive terminal for a loose connection, contact
resistance, or oxidation.