P0323high severityPowertrain
Ignition/Distributor Engine Speed Input Circuit Intermittent
on 2002 Audi A6 3.0L V6 · AWD
What this code means
The engine speed signal from the ignition or distributor is dropping out intermittently. This can cause random stalling or hard starts that are hard to reproduce.
Symptoms
- Intermittent stalling
- Random hard starts
- Tachometer flickers
Common causes
- Loose sensor connector
- Chafed or intermittent wiring
- Failing RPM sensor
- Reluctor ring runout
Diagnostic steps
- Wiggle-test wiring while monitoring signal
- Inspect connector pins for corrosion
- Scope sensor output during driving
- Check sensor mounting and air gap
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