199003082 - P0402 EGR valve
 | This error is detected if the quantity of exhaust gas recirculation is too high. As a result, the exhaust gas recirculation valve is switched off and the supercharging pressure can longer be controlled and the quantity of fuel injected is reduced. |
| Test results | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
|---|---|---|---|---|
| Check the seal of the inlet/supercharging system hoses.Check the hoses and connected pipes to identify any obstructions, damage etc.Check that the pipe restriction bands in the air intake/inlet system are correctly fitted. | Move on to Step 1 | Connections faulty, obstructions or porousness | Renew or, if necessary, replace the faulty components | |
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
| Select the following system on the diagnostic equipment: Bosch diesel injection control unit EDC16C39 CF4/EOBD CAN (EP engine 1.9) and check the following parameters:- Air temperature in the intake manifoldSee Test 1064BD - Turbo pressure Objective- Turbo pressure Measured See Test 1060GF SUPERCHARGING PRESSURE CHECK- Measured air mass See Test 1060GG CHECK MEASURED AIR MASS | End of diagnosis | - | - | |