P0148 – Fuel Delivery Error

P0148 – Fuel Delivery Error
Description:                 At least one bank is lean at wide open throttle (WOT).
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:
Related Topics  P0121 - ThrottlePosition (TP) Circuit Performance Problem

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