Engine Crankshaft Speed/Position – Data Valid but Above Normal Operational Range – Moderately Severe Level
|Fault Code: 1992
Engine Crankshaft Speed/Position – Data Valid but Above Normal Operational Range – Moderately Severe Level. Engine crankshaft speed/position SIGNAL indicates engine speed above engine protection limit.
Engine Crankshaft Speed/Position Sensor Circuit
The engine crankshaft speed/position sensor and the engine camshaft speed/position sensor provide engine speed and position information to the ECM through the engine harness.
The engine crankshaft speed/position sensor is located on the ECM side of the engine, behind the oil filters. The engine camshaft speed/position sensor is located above the fuel pump, in back of the gear housing. Refer to Procedure 100-002 (Engine Diagrams) in Section E for a detailed component location view.
This fault code is only applicable to engines powering generator sets.
Possible causes of this fault code include:
- External fuel sources drawn into the intake air passage
- Reverse powering (motoring) of the engine
- Tampering of the engine crankshaft speed/position and engine camshaft speed/position sensors.
Inspect the intake manifold for sources of flammable vapors. Check the turbocharger seals to verify that there are no oil leaks. Inspect the engine crankshaft speed/position and engine camshaft speed/position sensors for damage or tampering.