P2290

2788 - P2290

Information saved in
DME

Fault code
2788 - P2290

Fault text
Fuel pressure, setpoint/actual-value comparison at max.
pressure

Fault description


Condition for fault identification
Test condition:
tmot > K_Sensor_OBD_TMOT_Min
&& !ekp_obd_vl_t
&& !B_ZUST_SA
&& !B_ZUST_SB
&& pumg > K_Sensor_OBD_PUMG_Min
&& ub > K_Sensor_OBD_Plus_Min
&& (!B_ED_Sensor_PUMG_FEHLER)
&& !B_EGAS_FEHLER
&& (time_ml > K_Sensor_OBD_TIME_ML_Min)
&& abs(can_ay) < K_Sensor_OBD_AY
&& can_fst_sum
Terminal condition: Terminal 15
Voltage condition:
ub > K_ED_PlusMin

Condition for fault memory entry
Fuel pressure too low at maximum pressure
Mutual deviation between specified/actual pressure >
K_Sensor_OBD_Q_Min

Action in service
1. Carry out system test routine
2. Check fuel filter, replace as indicated
3. Check plug and wiring harness at fuel-pressure sensor,
replace as indicated
4. Check plugs and wiring harness for both fuel pumps,
check pumps, replace as indicated

Fault effect and breakdown warning
Poor throttle response / power reduction / engine speed
limited/ engine may stall / Check Control message / MIL
lights up after engine runs 2x

Driver information
Warning light:
29-Engine malfunction

Service instruction
none