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Home >> BMW >> 2008 >> 528xi Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Self Diagnosis - Diagnostic Trouble Codes - DTC P1214 - DTC U1168 (N51, N52) >> BMW MSV80 >> DTC P140A, BMW Hex Code 0x2A00, BMW Code 10752: Secondary Air Injection System Insufficient Total Flow (Bank 1 and Bank 2) (SIG) >> Repair procedures (plant/service)

Repair procedures (plant/service)

  1. Visual inspection from connecting hose between secondary air injection pump (SAP) and secondary air-injection valve (SAV). Replace the hose if it is damaged.
  2. Determine whether hose is connected. - if not - connect hose. A click must be audible when the hose is connected.
  3. Conduct EOL test and listen to determine whether SAP is running or not: - if yes - determine whether the pump is producing pressure (hold with hand), it should be possible to feel pressure - of not - check wiring to pump (plug, relay, wiring), conduct EOL test with pump supplied by separate 12 V power source.
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