DTC P050B-00: Cold Start Ignition Timing Performance Problem: Notes

DTC P050B:00 DETECTION CONDITION AND POSSIBLE CAUSE

DTC P050B:00	Cold start ignition timing performance problem
DETECTION CONDITION	The PCM monitors actual ignition timing using the CKP sensor with electronic spark advance control fast idle correction operating. If the ignition timing is out of specified range, the PCM determines that the ignition timing at cold condition has performance problem. Diagnostic support note This is a continuous monitor (cold start emission reduction strategy monitoring). The check engine light illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM. PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	-
POSSIBLE CAUSE	Air suction in intake air system Drive-by-wire control system malfunction Throttle valve stuck or blockage PCM malfunction
SYSTEM WIRING DIAGRAM	-