DTC P2227: Notes

• The PCM monitors the differences between the intake manifold vacuum and atmospheric pressure at idle, which the EGR boost sensor detects by switching the EGR boost sensor solenoid. If the difference is 6.4 kPa {48 mmHg, 1.9 inHg} or below,  the PCM determines that there is an EGR boost sensor performance problem.

Diagnostic support note 

• This is a continuous monitor (CCM).
• 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.

• EGR boost sensor malfunction
• EGR boost sensor solenoid malfunction
• Loose, damaged, misconnected, clogged or frozen moisture in vacuum hose from EGR boost sensor solenoid to EGR boost sensor
• Loose, damaged, misconnected, clogged or frozen moisture in vacuum hose from EGR boost sensor solenoid to EGR pipe
• PCM malfunction