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DTC P050B: Notes

DTC P050B [L3 WITH TC] DETECTION CONDITION AND POSSIBLE CAUSE

DTC P050B Cold start ignition timing performance
DETECTION CONDITION 
  • The PCM monitors actual ignition timing while 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 an intermittent monitor (Cold start emission reduction strategy monitoring).
  • The MIL 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 the first drive cycle.
  • FREEZE FRAME DATA is available.
  • DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Electronic throttle control system malfunction
  • Throttle valve stuck or blockage
  • Air suction in intake air system
  • PCM malfunction
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