312002978 - P0402 EGR valve
 | Perform the diagnostic test by comparing the intake air mass with the reference value. An error is detected if the result is not consistent and is NOT within the calibrated range limit |
| Test results | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
|---|---|---|---|---|
| Check that the air intake/vacuum circuit is working properlySee Test 1048OA | Move on to Step 1 | - | - | |
| 1 | CHECK EGR SOLENOID | All OK | Problems encountered | Operation |
| Check the operation of the EGR solenoidSee Test 1080CB | End of diagnosis | - | - | |