0190-02 Primary Engine Speed Loss of Signal (34)
Conditions Which Generate This Code:
The signal for the camshaft position sensor 1 (top) is intermittent or lost.
System Response:
Electronic System Response The check engine lamp will not be illuminated for this code unless the code has been active for 10 hours. The code is logged.
Service Tool Display or Lamps Caterpillar Electronic Technician (ET) will not display a status.
Engine Response There should not be a noticeable change in engine response unless the signal for the camshaft position sensor 2 (bottom) is lost. This loss will shut down the engine.
Test Step 1. Perform the following diagnostic procedure: Engine Speed/Timing Sensor Circuit - Test
Results:
- OK - STOP
Caterpillar Information System:
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