Codes P0300, P0131, P0151, P1870, P0102, will not start, stalling low fuel pressure?

1996 CHEVROLET SILVERADO
245,000 MILES • 5.0L • V8 • 2WD • AUTOMATIC
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DANNY LEDESMA
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Truck won't start or will stall out after start or giving it throttle. Fuel pressure reads at 45 on ignition then drops to 20. Replaced fuel pump, fuel filter, fuel injectors with regulator, spark plugs. Getting codes P0300, P0131, P0151, P1870, P0102.
May 22, 2023 at 1:18 AM
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STRAILER
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Here is what is said about the codes:

P0300 - Random/Multiple Cylinder Misfire Detected:

P0131 - O2 Sensor Circuit Low Voltage Bank 1 Sensor 1:

P0151 - O2 Sensor Circuit Low Voltage Bank 2 Sensor 1:

P1870 - Transmission Component Slipping:

P0102 - Mass or Volume Air Flow Circuit Low Input:

The only codes that can affect the engine running is the MAF I would get a new one and install it. here is how in the diagrams below.
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May 22, 2023 at 11:41 AM