INDEPENDENT REFERENCE
P0335 — Crankshaft position sensor A circuit malfunction
Generic powertrain DTC · HIGH priority for follow-up (not a certified safety rating)
What the code means
The ECM detects a problem with the crankshaft position signal or circuit.
What you might notice
Crank-no-start; stalling; intermittent tachometer loss.
Possible causes — not a diagnosis
Sensor or wiring fault; damaged reluctor wheel; power/ground fault; timing issue.
Useful diagnostic checks
Check cranking RPM signal; scope or test sensor circuit to manufacturer specifications; inspect mechanical timing if needed.
Next steps
Fix measured signal or mechanical problems; unexpected stalling can be unsafe.
Related OBD-II codes
These generic definitions are explanatory summaries of commonly standardized OBD-II powertrain conditions. Vehicle-specific code logic and service procedures must be verified against manufacturer documentation. EPA: On-board diagnostics.