Possible Causes
NOTE:
Low pressure EGR differential pressure sensor rationality check at initialization, pressure above high threshold (20hPa)
- The powertrain control module measures a signal that remains high when transitions are expected
- Other low pressure EGR related DTCs
- Low pressure EGR system blockage
- Low pressure EGR valve mechanical integrity Low pressure EGR differential pressure sensor signal circuit short circuit to power
- Connector is disconnected, connector pin is backed out, connector pin corrosion
- Low pressure EGR differential pressure sensor failure