Camshaft Position Sensor
2011 Ford F-150 · 3.5L V6 EcoBoost
Sensor Type
hall-effect
Waveform Type
dc-square
Location
One sensor on each cylinder head valve cover area - Bank 1 (passenger side) intake cam and Bank 2 (driver side) intake cam, mounted at front of valve covers
Pins
3-pin connector
Idle Frequency
8.33 Hz
Timebase
50ms/div
Voltage Scale
2V/div
Trigger
2.5V, rising edge
Wiring
Bank 1: Tan/Orange (signal), Black (ground), Orange/White (12V supply); Bank 2: Light Blue/Red (signal), Black (ground), Orange/White (12V supply)
Expected Voltage Range
At Idle
0.2V to 5V
At Higher RPM
0.2V to 5V
Expected Pattern
3 evenly-spaced pulses per camshaft revolution, square wave pattern switching between 0.2V and 5V, runs at half crankshaft speed
Known-Good Waveform
Clean digital square wave with three distinct pulses per camshaft revolution at approximately 8-9Hz at idle. Signal should maintain sharp rising and falling edges between 0.2V and 5V. Correlation between camshaft and crankshaft sensors must show proper timing alignment; PCM expects cam signal at specific crankshaft positions.
Common Failure Patterns
Loss of signal or intermittent dropout during engine operation, especially when engine is at operating temperature
Cause: Sensor heat soak from valve cover area, internal Hall effect IC failure, or oil intrusion into connector from valve cover gasket leaks
Diagnostic Tips
EcoBoost engines are known for timing chain stretch after 100k miles; verify cam/crank correlation. Check for oil consumption issues as cam phasers require proper oil pressure. These sensors are highly sensitive to valve cover gasket leaks allowing oil into connectors.
Related Diagnostic Trouble Codes
P0340P0341P0342P0343P0344
Always confirm waveform data with your vehicle's OEM service manual before diagnosing.
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