P0320high severityPowertrain
Ignition/Distributor Engine Speed Input Circuit
on 2017 Audi S5 3.0L Supercharged V6 · AWD
What this code means
The PCM detected a fault in the engine speed (RPM) input signal from the ignition or distributor circuit. This can cause stalling or no-start conditions.
Symptoms
- Engine stalling
- Hard starting or no start
- Erratic RPM signal
Common causes
- Faulty crankshaft/RPM sensor
- Wiring open or short
- Poor connector contact
- Faulty ignition module
Diagnostic steps
- Scan for related codes
- Inspect sensor wiring and connector
- Test RPM sensor signal
- Check ignition module operation
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