Crankshaft Position Sensor
2011 Ford F-150 · 3.5L V6 EcoBoost
Sensor Type
hall-effect
Waveform Type
dc-square
Location
Right side of engine block, near the crankshaft pulley, mounted in the timing chain cover at approximately 2 o'clock position when viewing from front
Pins
3-pin connector
Idle Frequency
50 Hz
Timebase
20ms/div
Voltage Scale
2V/div
Trigger
2.5V, rising edge
Wiring
Gray/Yellow (signal), Black/White (ground), Brown/White (12V supply)
Expected Voltage Range
At Idle
0.2V to 5V
At Higher RPM
0.2V to 5V
Expected Pattern
36 teeth minus 1 missing tooth pattern, square wave transitions between 0.2V and 5V, missing tooth creates wider gap approximately every 360 degrees of crank rotation
Known-Good Waveform
Clean square wave switching between 0.2V and 5V with crisp transitions. At idle (approximately 600-700 RPM), expect frequency around 50Hz with consistent tooth spacing except for the missing tooth gap which is twice as wide. Amplitude should remain constant regardless of RPM changes.
Common Failure Patterns
Intermittent signal dropout or complete loss of square wave, reverting to flat line at 0V or 5V
Cause: Hall effect sensor internal failure, often due to heat from turbochargers, or connector corrosion from proximity to engine oil leaks
Diagnostic Tips
EcoBoost engines run hot due to turbochargers; check sensor resistance to heat-related failure. Oil leaks from timing cover are common and can contaminate the connector. Verify 12V supply voltage is present before condemning sensor.
Related Diagnostic Trouble Codes
P0335P0336P0337P0338P0339
Always confirm waveform data with your vehicle's OEM service manual before diagnosing.
Free, no signup. View all waveforms for this vehicle