Camshaft Position Sensor
2022 Ford F-150 · 3.5L V6 EcoBoost
Sensor Type
hall-effect
Waveform Type
dc-square
Location
Two sensors - Bank 1 (passenger side) mounted at front of cylinder head near timing cover, Bank 2 (driver side) in corresponding position; both reading multi-tooth cam sprocket wheels
Pins
3-pin connector
Idle Frequency
25 Hz
Timebase
50ms/div
Voltage Scale
2V/div
Trigger
2.5V, rising edge
Wiring
Bank 1: Tan/Orange (signal), Black/White (ground), Gray/Red (12V power); Bank 2: White/Blue (signal), Black/White (ground), Gray/Red (12V power)
Expected Voltage Range
At Idle
0.3V to 4.7V
At Higher RPM
0.2V to 5V
Expected Pattern
Multiple square wave pulses per camshaft revolution with unique tooth pattern for cylinder identification, runs at half crankshaft speed
Known-Good Waveform
Clean digital square wave switching between approximately 0.3V and 4.7V at half the frequency of the crankshaft sensor (approximately 25 Hz at idle). The pattern shows distinct groupings of pulses that allow the PCM to identify specific cylinders. Signal should show smooth phase shifts during cam phaser operation with no dropouts.
Common Failure Patterns
Signal present but timing correlation errors between cam and crank, phase shifts exceed normal VCT range
Cause: Worn timing chains allowing excessive slack, common failure point on higher mileage EcoBoost engines (80k+ miles)
Complete loss of signal or intermittent dropout, especially when engine is hot
Cause: Sensor failure due to thermal stress or oil contamination of sensor face from leaking VCT solenoid seals
Diagnostic Tips
EcoBoost engines are highly susceptible to timing chain stretch; always verify cam-to-crank correlation using dual-channel scope with both sensors. Cam phaser rattle on cold start is an early warning sign—capture cam sensor during startup to check for erratic phase positioning before mechanical failure occurs.
Related Diagnostic Trouble Codes
P0340P0341P0342P0343P0344
Always confirm waveform data with your vehicle's OEM service manual before diagnosing.
Free, no signup. View all waveforms for this vehicle