2A00 - P140A

2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction

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2A00 - P140A (DME)

2A00 - P140A

Information saved in

DME

Fault code

2A00 - P140A

Fault text

Secondary-air system

Fault description

Secondary Air Injection System Insufficient Total Flow (Bank 1 and Bank 2)

Condition for fault identification

Test condition:

Activation conditions:

Engine start

Secondary air-injection must be active

Ambient temperature >3 锟斤拷C

-3.8 锟斤拷C < Coolant temperature < 50.3 锟斤拷C Terminal condition: Terminal 15, engine start Voltage condition:

Vehicle electrical system voltage (battery voltage between 7 & 15 V)

Condition for fault memory entry

40 sec.

Action in service

Visual inspection from connecting hose between secondary air injection pump (SAP) and secondary air- injection valve (SAV). Replace the hose if it is damaged.

Determine whether hose is connected.

if not - connect hose. A click must be audible when the hose is connected.

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 12V power source. (With additional fault code entry => Replace pump)

Remove SAV from motor and connect to the hose. - Conduct EOL test and use hand to determine whether air is flowing through the valve.

If so, then the valve is defective and must be replaced. If not, valve is OK

Clean the passage between exhaust gas banks 1 and 2 (in engine block)

Install SAV again, run through EOL test. If the malfunction is registered again, repeat steps 5 and 6.

Fault effect and breakdown warning

Driver information Warning light: MIL