Forum fixing downpipe cel 0l install after civicx wire so slack sensor o2 partially ll left much also there add Honda accord sensor 2006 p0141 o2 replacement Fixing p0139 cel after downpipe install
Fixing P0139 CEL after Downpipe Install - 2.0L | 2016+ Honda Civic
O2 sensor replacement for 2006 honda accord 4cy se
Fixing P0139 CEL after Downpipe Install - 2.0L | 2016+ Honda Civic
O2 Sensor Replacement for 2006 Honda Accord 4cy SE - P0139 & P0141