P1150 BMW Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction Bank 2 Sensor 1
Possible causes
– Faulty Air fuel Ratio (A/F) Bank 2 Sensor 1
– Air fuel Ratio (A/F) Bank 2 Sensor 1 harness is open or shorted
– Air fuel Ratio (A/F) Bank 2 Sensor 1 circuit poor electrical connection
– Fuel pressure
– Fuel injector
– Intake air leaks
– Air fuel Ratio (A/F) Bank 2 Sensor 1 harness is open or shorted
– Air fuel Ratio (A/F) Bank 2 Sensor 1 circuit poor electrical connection
– Fuel pressure
– Fuel injector
– Intake air leaks
What about the obd code?
The 1150 code is set when A/F sensor output voltage change value is not what the Engine Control Module (ECM) is expecting.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1150 BMW Description
The Air-Fuel ratio (A/F) sensor varies its output voltage in proportion to the air-fuel ratio. Based on the output voltage, the Engine Control Module (ECM) determines if the air-fuel ratio is RICH or LEAN and adjusts the stoichiometric air-fuel ratio. The ECM also checks the fuel injection volume compensation value to check if the A/F sensor is deteriorating or not. A/F sensor response deterioration is determined by the ratio of the A/F sensor output voltage variation and fuel trim variation.
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