P0322Ignition/Distributor Engine Speed Input Circuit No Signal
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0322 means the speed and reference input of the ignition – today the crankshaft position sensor – delivers no signal although the engine is turning. Ford proves the rotation with the camshaft sensor: if it shows more than one engine revolution without a crank signal (from 500 rpm, detected within 5 s), Ford sets P0322 or, depending on the engine, P0335; with electronic throttle the throttle software adds P2106 and goes into limp mode. Without a crank signal there is no ignition or injection, so the engine stalls or does not start. Saab's Motronic 2.8.1 (900 V6) sets P0322 when the engine fails to start; its inductive sensor should measure 500–600 Ω and give 2–5 V AC while cranking. Systems without a camshaft-based check may store no code at all on a total failure.
- What you may notice
- Engine cranks but does not start
- Engine stalls while driving
- Tachometer shows zero
- Check engine light on, with electronic throttle limp mode (P2106)
- Likely causes
- LikelyCrankshaft position sensor failed (often heat-related)
- LikelyOpen or short in signal, ground or 5 V supply, corroded connector
- PossibleSensor loose, air gap too large or tone wheel damaged
- Rare5 V reference pulled down by another sensor on the same supply
- RareEngine module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.