MSS60 Error: 27C5, P2430

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27C5 - P2430

Information saved in DME
Fault code 27C5 - P2430
Fault text Air-mass sensor, secondary air, plausibility
Fault description Secondary Air Injection System Air Flow/Pressure Sensor Circuit (Bank 1)
Condition for fault identification Test condition: sls_obd_max after 10 sec. SLS operation under KL_SLS_OBD_HFM_DIAG_MIN or after 20 sec. SLS_operation sls_obdh_mdf_max_intg_norm < K_SLS_OBDH_EUV_MIN_DEF and higher exhaust gas lamda
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. Remove secondary air line from secondary air pump
2. Conduct test routine
3. If secondary air pump runs/air flows out, and error is still logged, replace the mini-HFM
Fault effect and breakdown warning MIL is on after 2x engine cold start
Driver information Warning light: MIL
Service instruction None