312002977 - P0401 EGR valve
 | The diagnostic test is carried out by comparing the intake air mass with the reference value. The error is recognized if the result is not consistent, but within the calibrated range limit |
| Test results | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
|---|---|---|---|---|
| Check that the air intake/vacuum circuit is working properly | Move on to Step 1 | - | - | |
| 1 | EGR SOLENOID VALVE CHECK | All OK | Problems encountered | Operation |
| Check the operation of the EGR solenoid valveSee Test 1080CB E.G.R. SOLENOID FUNCTIONAL TEST | End of diagnosis | |||