P1411

27AF - P1411

Information saved in
DME

Fault code
27AF - P1411

Fault text
Secondary-air pump

Fault description
Secondary Air Pump No Activity Detected

Condition for fault identification
Test condition:
sls_obdh_mdf_max_intg_norm (after 20s) <
KL_SLS_OBDH_HFM_DIAG_MIN & >
K_SLS_OBDH_SLP_DEF or
sls_obdh_mdf_max_intg_norm (after 20 sec.) <
KL_SLS_OBDH_HFM_DIAG_MIN & <
K_SLS_OBDH_SLP_DEF & exhaust lamda not high
Terminal condition: Engine running
Voltage condition:
Battery voltage > 10.8 V (k_sls_obd_ub_min)

Condition for fault memory entry
30000 ms

Action in service
1. Check wiring to secondary air pump
2. Check plugs and wiring harness on secondary air pump
3. If OK, remove secondary air pump relay, and connect the
two terminals (30 and 87) in the socket with ignition on, if
secondary air pump still does not start, it is defective,
replace secondary air pump.
4. If secondary air pump

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

Driver information
Warning light:
MIL

Service instruction
none