Crankshaft Position Sensor
2018 Toyota Camry · 2.5L I4 Hybrid
Sensor Type
mre
Waveform Type
crank-plate
Location
Front of engine block, facing crankshaft timing rotor, below timing chain cover on passenger side near oil pan rail
Pins
3-pin connector
Idle Frequency
35 Hz
Timebase
20ms/div
Voltage Scale
2V/div
Trigger
2.5V, rising edge
Wiring
Gray (signal), Brown (ground), Orange/Red (12V power supply from ECM)
Expected Voltage Range
At Idle
0V to 5V
At Higher RPM
0.1V to 4.9V
Expected Pattern
34 teeth with 2 missing on crank angle sensor plate. MRE sensor outputs 0-5V digital signal. Each tooth creates a Hi pulse, missing section creates sync gap for ECU to determine TDC.
Known-Good Waveform
Clean digital square wave alternating between approximately 0.3V and 4.7V with sharp transitions. 34 uniform pulses per crank revolution at idle (approximately 700 RPM engine speed). Pulse width remains consistent with no dropouts or irregular spacing, frequency increases proportionally with RPM.
Common Failure Patterns
Intermittent signal dropout or missing pulses, waveform cuts out completely
Cause: Internal Hall-effect IC failure from heat exposure or manufacturing defect, common on 2018-2020 models
Signal stuck high or low, no square wave present
Cause: Wiring harness chafing near oil pan where harness routes, oil contamination on connector pins
Erratic pulse widths, voltage levels not reaching 4.5V or dropping below 0.5V
Cause: Poor ground connection at engine block or corroded sensor connector from moisture intrusion
Related DTCs: P0339
Diagnostic Tips
Toyota hybrid models use the crank sensor for engine start/stop coordination with MG1 motor-generator; verify 12V supply voltage is stable during hybrid transitions. Check for oil leaks from timing cover that can contaminate the sensor face and rotor.
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