P0336 — Crankshaft position sensor A: range/performance

P0336 indicates CKP A feedback outside the expected pattern. This signal provides crank position/speed. A does not identify an engine bank, and the code alone does not justify sensor or timing replacement.

Affected system: Powertrain

Symptoms

• Hard/no starting or engine stalling.
• Engine lamp and absent/unstable scan-tool RPM, possibly only when hot.

Possible causes

• Damaged trigger wheel, metallic contamination or incorrect mounting clearance.
• Disturbed signal, poor contact or failed sensor; verify mechanical mismatch by measurement.

What to check

• Record freeze-frame and CMP/correlation codes; monitor cranking RPM and when P0336 occurs.
• Identify Hall/active versus inductive design from service data, not pin count alone.
• Inspect connector, routing and sensor mounting; examine target/contamination through approved access.
• Test supply/ground where used, then wiring continuity/insulation to diagram.
• Compare waveform, tooth pattern and CKP/CMP synchronisation with the same-engine reference before assessing base timing.

Also written as: P0336-00, P033600, PO336 (some scan tools add the fault-type byte, e.g. -00).