OBD-II code · Powertrain (generic)
P0323 Ignition/Distributor Engine Speed Input Circuit Intermittent
Engine speed input signal jumps or drops out intermittently — connector or wiring issue. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P0323?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyIntermittent connector
- Less likelyConnector with intermittent contact under vibration
- Less likelyHarness routed against vibrating component
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- Parts involved
- Ignition Distributor
Related codes
- P0320Ignition/Distributor Engine Speed Input Circuit
- P0321Ignition/Distributor Engine Speed Input Circuit Range/Performance
- P0322Ignition/Distributor Engine Speed Input Circuit No Signal
- P0324Knock/Combustion Vibration Control System Error
- P0325Knock Sensor 1 Circuit Malfunction (Bank 1)
- P0326Knock/Combustion Vibration Sensor A Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.