Technical Definition:

System Too Rich (Bank 1)

Technical Description:

Possible Causes:

Possible Symptoms:

System Too Rich Bank 1

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty front heated oxygen sensor
– Ignition misfiring
– Faulty fuel injectors
– Exhaust gas leaks
– Incorrect fuel pressure
– Faulty Mass Air Flow (MAF) sensor

Specific Makes:

– Excessive Fuel Consumption