What does code P0321 mean?
CKP or CMP signal is outside expected range for engine speed
OBD-II Code
P0321 — Ignition Distributor Engine Speed Input Circuit Range or Performance
CKP or CMP signal is outside expected range for engine speed
Common symptoms
- Stalling
- hesitation
- hard starting
- loss of acceleration
Possible causes
- Worn CKP sensor
- distributor timing issue
- damaged wiring
Initial recommendation
Inspect CKP or CMP sensor, timing alignment and harness continuity.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0321 with your vehicle's actual symptoms for more complete diagnostic guidance.
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