Possible Causes
Possible causes are:
- EGR boost sensor malfunction or substandard performance
- EGR boost sensor solenoid valve malfunction
- Loose, damaged, misconnected, clogged or frozen moisture in vacuum hose from EGR boost sensor solenoid valve to EGR boost sensor
- Loose, damaged, misconnected, clogged or frozen moisture in vacuum hose from EGR boost sensor solenoid valve to EGR pipe
- PCM malfunction