P1399 ACURA – Random Cylinder Misfire Detected

P1399 ACURA Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light),Lack/loss of power,Hard start,Engine hesitation

P1399 ACURA Possible Causes

Valve clearance out of range,Blocked EGR (exhaust gas recirculation) Passages

P1399 ACURA Description

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring. – Valve clearance out of range