P0316moderate severityPowertrain
Engine Misfire Detected on Startup (First 1000 Revolutions)
on 2019 Mazda Mazda3 2.5L I4 · FWD
What this code means
Misfire detected during the first 1000 engine revolutions after startup.
Symptoms
- Check Engine Light after cold start
- Rough start then smooths out
- Stumble on startup
Common causes
- Leaking fuel injector (dripping when off)
- Loss of fuel pressure after shutdown
- Spark plug fouled from previous shutdown
Diagnostic steps
- Perform fuel pressure leak-down test
- Check injectors for leaks
- Inspect spark plugs
- Monitor misfire counts on cold start
Repair notes
Check for leaking injectors. Replace fouled spark plugs.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1