2003 Acura Tl Code P1399. Random misfire code P1399. On Honda vehicles the OBD code p1399 indicates that there is a random misfire occurring in the engine.
When a misfire occurs engine speed will fluctuate. Do you read more. 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 and the Diagnostic Trouble Code DTC will set.
Bad fuel or water in the fuel can cause P1399 which is more a temporary code.
Acura TL 2003 - Back to Fix-It - Acura TL Repair Manuals Q. P0304 is certainly a cause for concern and should be considered a threat to the drivability your TL. Here is one non- operational coil that set all cylinder to code a misfire condition. 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 and the Diagnostic Trouble Code DTC will set.
