27B2 - P1412 (DME)

27B2 - P1412

Information saved in
DME

Fault code
27B2 - P1412

Fault text
Secondary air-injection system flow rate, main branch

Fault description


Condition for fault identification
Test condition:
Continuous compliance with secondary air-injection system
conditions
Terminal condition: Engine running
Voltage condition:
ub > K_DIAG_TR_Plus_Min

Condition for fault memory entry
sls_obdh_mdf_max_intg_norm (after roughly 30 sec.) >
K_Sekund�rluftsystem_OBDH_MDF_Max_DEF and
sls_obdh_lam_asv_intg_norm <
k_Sekund�rluftsystem_OBDH_MDF_1_MAG and >
k_Sekund�rluftsystem_OBDH_MDF_2_MAG or

Action in service
1. Check main harness for leaks and replace secondary air-
injection line as indicated

Fault effect and breakdown warning
MIL is on after 2x engine cold start

Driver information
Warning light:
No

Service instruction
none