I have a 2001 Chevy Silverado 5.3l LS and it has a bunch of check engine code most being related to the circuit. If someone could help me figure out why I have all the codes that would be great. The truck runs fine and shows no issues whatsoever. No check engine light either.

here are the codes

P0101 MAF sensor performance

P0102 MAF sensor circuit low frequency

P0103 MAF sensor circuit high frequency

P0106 MAP sensor performance

P0108 MAP sensor circuit high voltage

P0112 IAT sensor circuit low voltage

P0113 IAT sensor circuit high voltage

P0117 ECT sensor circuit low voltage

P0118 ECT sensor circuit high voltage

P0121 throttle position sensor circuit insufficient activity

P0125 ECT insufficient for closed loop fuel control

P0128 coolant thermostat

P0131 HO2s circuit low voltage bank 1 sensor 1

P0132 HO2S circuit high voltage bank 1 sensor 1

P0133 HO2S slow response bank 1 sensor 1

P0134 HO2S circuit insufficient activity bank 1 sensor 1

P0135 HO2S heater performance bank 1 sensor 1

P0137 HO2S circuit low voltage bank 1 sensor 2

P0138 HO2S circuit high voltage bank 1 sensor 2

P0140 HO2S circuit insufficient activity bank 1 sensor 2

P0141 HO2S Heater performance bank 1 sensor 2

P0151 HO2S circuit low voltage bank 2 sensor 1

P0152 HO2S circuit high voltage bank 2 sensor 1

P0152 HO2S slow response bank 2 sensor 1

P0154 HO2S circuit insufficient activity bank 2 sensor 1

P0155 HO2S heated performance bank 2 sensor 1

P0157 HO2S circuit low voltage bank 2 sensor 2

P0158 HO2S circuit high voltage bank 2 sensor 2

P0160 HO2S circuit insufficient activity bank 2 sensor 2

P0161 HO2S Heater performance bank 2 sensor 2

P0171 fuel trim system lean bank 1

P0172 fuel trim system rich bank 1

P0174 fuel trim system lean bank 2

P0175 fuel trim system rich bank 2

P0200 injector control circuit

P0230 fuel pump relay control circuit

P0300 engine misfire detected

P0325 OCM knock sensor circuit

P0327 knock sensor circuit low voltage

P0332 knock sensor 2 circuit low voltage bank 2

 

since the money light isn't on, then maybe there isn't a problem. Clear the codes then wait and see what happens. Maybe your battery just ran too low.

 

I have a code scanner and I have cleared the codes and they are still there.

 

My take is replace the pcm/ecm. All those codes are related to high and low voltage on the end device i.e. MAF sensor, also with the fuel trim issues is probably causing the misfire.

 

That's an expensive conclusion to jump to.

I would check the cheap options first. Like make sure the power distribution system is in good shape.