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FAULT CODE 234
Engine Crankshaft Speed/Position - Data Valid But Above Normal Operating Range - Most Severe Level
Overview
CODE | REASON | EFFECT |
Fault Code: 234 | Engine Crankshaft Speed/Position - Data Valid But Above Normal Operating Range - | Fuel injection disabled until engine |
PID: | Most Severe Level. Engine speed signal indicates engine speed above engine | speed falls below the overspeed |
SPN: 190 | protection limit. | limit. |
FMI: 0 | ||
LAMP: Red | ||
SRT: |
Engine Crankshaft Speed/Position Sensor Circuit
Circuit Description
The engine crankshaft speed/position sensor and the engine camshaft speed/position sensor provide engine speed and position information to the engine control module (ECM) through the engine harness.
Component Location
The engine crankshaft speed/position sensor is located on the intake side of the engine near the number 6 cylinder at the crankshaft centerline. The engine camshaft speed/position sensor is located above the fuel pump in the back of the gear housing.
Shop Talk
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 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 speed/position sensors for damage or tampering.
Refer to Troubleshooting Fault Code t05-234.
Last Modified: 28-Nov-2012
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