P0323
PowertrainCrankshaft Camshaft Positionhigh severityIgnition/Distributor Engine Speed Input Circuit Intermittent
What P0323 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
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Community Confirmed Fixes
No confirmed fixes yet for this code. Be the first to contribute!
Submit a FixFound a Fix for P0323?
Help other technicians by sharing what worked on your vehicle.
Submit Your Fix