Trouble code P0401 means: Exhaust gas recirculation - insufficient flow detected
What does obd code P0740 mean
egr, low flow problem.clean out egr and tube, of carbon.
plug a obd 2 code reader into your car and activate it.
OBD I, but for the most part, you can use OBD II
OBD code P0304 is Cylinder Four Misfire.
Obd-on board diagnostic. The port is the plug the scan tool or code reader connects to.
J1850 is not a trouble code. It is a protocol that the OBD-II system uses. Trouble codes will be represented by a P before the numbers
OBD I code 67 - Neutral Drive Switch Circuit Open ( key on , engine off )
OBD code P1127 mean Exhaust not warm enough.
Replace the leading 0 with 61, so for example 0401 555 555 becomes 61401 555 555
0401
0015, 0205, 148, 0207 0039 0546 0294 0401 0248 0067 0586 0463 0442 0392 1067 0384 0611 1934 1354 2012 0236 0393 0289 0392 0193 0441 0581 0401 0066 0294 0376 0465 0683 0066 0713 0401 0248 0636 0448 0761 0123, 1273.