Engine code p0401 solved. egr insufficient flow 2000 f150 xlt Sensor o2 oxygen heater p0137 heated p0138 resistance ho2s carparts p0030 causes exhaust sensor1 bank2
Ford F150 P0420 Check Engine Code
P0401 f150 code 2000 egr engine flow insufficient xlt P0138 code: o2 sensor circuit high voltage (bank 1, sensor 2)