Chevrolet Repair: 1997 Chevy Cavalier Sensor Problem, camshaft position sensor, powertrain control module

Question
I have a 97 Cavalier, LS 2.4L.  The check engine light is on, I've tested it and
the code of P0342, Camshaft Position Sensor - Low Input was the warning.  I
replaced the sensor, cleared the code and it was fine for about a week, now
the same thing is happening and it makes the car run rough.  What other
things could lead to this problem or is there something else to do to
completely reset it ?

Answer
Usually the sensor causes the problem, but in some cases the wiring and/or the PCM is the culprit.  Here is the circuit description and some things to check.  
Jimmy


Circuit Description
The camshaft position (CMP) sensor correlates the crankshaft to camshaft position so that the Powertrain Control Module (PCM) can determine which cylinder is ready to be fueled by the injector. The CMP sensor also determines which cylinder is misfiring when a misfire is present. If the PCM receives an intermittent signal from the CMP, then the CMP Resync Counter will increment. When the PCM cannot use the information from the CMP sensor, a DTC is set and the PCM will fuel the engine by using the alternating synchronous double fire (ASDF) method.
Conditions for Setting the DTC
   •    The engine is running.
   •    The CMP Active Counter is not incrementing.
Action Taken When the DTC Sets
   •    The malfunction indicator lamp (MIL) illuminates.
   •    The PCM records the operating conditions at the time when the diagnostic fails. This information stores in the Freeze Frame and Failure Records buffers.
   •    A history DTC stores.
   •    The coolant fan turns ON.
Conditions for Clearing the MIL/DTC
   •    The MIL will turn OFF after three consecutive ignition cycles in which the diagnostic runs without a fault.
   •    A history DTC will clear after 40 consecutive warm-up cycles without a fault.
   •    The MIL/DTCs can be cleared by using the scan tool.
Diagnostic Aids
   •    An Intermittent problem may be caused by the following conditions:
      -    Poor electrical connection
      -    Rubbed-through wire insulation
      -    Broken wire inside the insulation
   •    Thoroughly check any suspected circuitry for the following conditions:
      -    Backed-out terminals
      -    Improper mating
      -    Broken locks
      -    Improperly formed connectors
      -    Damaged terminals
      -    Poor terminal to wiring connections
      -    Physical damage to the wiring harness