DTC P0148: Fuel Delivery Error

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P0148 - FUEL DELIVERY ERROR

Description:	At least 1 bank is lean at wide open throttle.
Possible Causes:	Severely restricted fuel filter Severely restricted fuel supply line Damaged or worn fuel pump. Damaged or contaminated mass air flow (MAF) sensor
Diagnostic Aids:
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	-	-	GO to HC: Fuel Delivery System STEP HC1.