P0336 Crankshaft Position Sensor A Circuit Range/Performance

P0336 indicates a range or performance problem in crankshaft position sensor A. The crank signal exists but does not match expected timing or quality.

Code details

Generic OBD-II · P0

System: Ignition / Misfire
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace the crank sensor before checking reluctor condition and signal quality; mechanical trigger faults can set the code.

Symptoms of P0336

Rough idle, shaking, or a stumble under acceleration.
A flashing check-engine light during an active misfire.
Power loss and higher fuel consumption.

Common causes of P0336

Worn spark plugs, ignition coils, or plug wires.
Fuel-delivery problems — injectors, pressure, or a lean/rich mixture.
Vacuum leaks, low compression, or a mechanical fault in that cylinder.

Useful checks before replacing parts

Review crank signal, RPM data, cam/crank synchronization, and freeze-frame conditions during cranking and running.
Inspect sensor mounting, air gap where applicable, reluctor or tone wheel damage, wiring, connector condition, and recent engine work.
Check for misfire, stall, no-start, or timing correlation codes that share crank signal information.

Related OBD-II codes

These nearby ignition / misfire entries can help compare wording and pin down the fault area.