Standard value of BMW mixed gas reporting fault code

N52 6-cylinder air-breathing engine or 4-cylinder turbocharged engine has other faults, such as dirty throttle nozzle, carbon deposition, air leakage and oxygen sensor failure.

First, the ISID is connected for diagnosis and detection, and the fault contents are read as 29E0 and 29E 1 lean mixture fault. According to the empirical analysis, the possible reasons for the lean mixture are as follows:

Air flow sensor signal

Engine temperature signal

inlet temperature

Front oxygen sensor

Air leakage in intake area (crankcase system, oil cover, brake booster system)

Air leakage in the exhaust system (the cylinder head exhausts to the second rear oxygen sensor)

Carbon canister solenoid valve is damaged (connected for a long time)

The quality of gasoline is very poor.

DME fault

Select the fault content to execute the inspection plan, and ISTA system recommends the following basic inspections first:

Air intake area detection

Check the exhaust device.

Test the fuel system