P0322: Ignition/Distributor Engine Speed Input Circuit No Signal
Do not keep driving
Expect a no-start. If the engine turns over but does not fire and there is no unusual noise, this points at the ignition pickup rather than at anything mechanical — but have the timing belt condition confirmed too.
What this code means
No engine speed signal at all. The module cannot time spark or fuel without it, so this is a no-start in almost every case. Confirm the engine is actually turning first — a failed pickup and a snapped timing belt both produce no speed signal, and the second is a far more serious finding.
Likely causes
Start here
- Faulty ignition module or pickup · moderate
- Open circuit in sensor wiring · moderate
- Corroded or loose connector · easy
Less common
- Timing chain or belt out of alignment · specialist
- Failed timing belt · specialist
Symptoms
Components involved
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
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