P0322 Code: Engine Speed Input Signal Missing
🟠 Moderate severity · drivable
If the engine is running, drive with caution to a shop; this code commonly causes a no-start or sudden stalling.
What P0322 means
The engine computer is getting no engine speed signal at all. This signal, usually from the crankshaft position sensor, tells the computer how fast the engine is turning. Without it, many cars will crank but won't start, or will stall and die while driving.
Symptoms
- Check engine light is on
- Engine cranks but won't start
- No spark
- Engine stalls or dies while driving
Common causes
- most common: Faulty crankshaft position sensor
- common: Broken wiring or loose connector at the sensor
- less common: Failed distributor pickup on older cars
- rare: Failed engine computer
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Replace the crankshaft position sensor | Yes | $50–200 |
| Repair broken sensor wiring | Mechanic | $50–150 |
| Have a shop test the sensor circuit with a scan tool | Mechanic | $80–150 |
Frequently asked questions
Can I drive with a P0322 code?
Only if the engine is running, and even then it may stall. A P0322 often means the car won't start at all.
What is the most common cause of P0322?
A faulty crankshaft position sensor or the wiring to it.
How much does it cost to fix a P0322?
Typically $50–$200 for a new crankshaft position sensor.
Related codes
P0321
P0321 Code: Engine Speed Input Signal Out of Range
P0335P0335 Code: Crankshaft Position Sensor Circuit Malfunction
P0336P0336 Code: Crankshaft Position Sensor A Circuit Range/Performance
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.