27BA - P2178 (DME)

27BA - P2178

Information saved in
DME

Fault code
27BA - P2178

Fault text
Fuel-system diagnosis, Bank 1

Fault description


Condition for fault identification
Test condition:
* Engine temperature exceeds
K_KurzschlussD_OBD_TMOT_Min * Engine rpm within
range (K_KurzschlussD_OBD_N_Min u.
K_KurzschlussD_OBD_N_Max) * Relative induction
charge density within range
(K_KurzschlussD_OBD_RF_Min and
K_KurzschlussD_OBD_RF_Max) * Intake air less than
threshold K_KurzschlussD_OBD_TAN * Ambient
barometric pressure K_KurzschlussD_OBD_P
Terminal condition: Engine running
Voltage condition:
none

Condition for fault memory entry
Substantial lambda deviation within the diagnostic period
K_KurzschlussD_OBD_DIAG_T Exceeds the max.
threshold K_KurzschlussD_OBD_Teillast_LAM_Max for at
least the period K_KurzschlussD_OBD_Teillast_Max_T

Action in service
1.Check the fuel system for leaks / 2. System system test / 3.
HFM and induction tract must be free of defects./ 4.
Defective fuel pressure sensor

Fault effect and breakdown warning
MIL on after engine runs 2x

Driver information
Warning light:
No

Service instruction
none