I have a 98 Chevy S-10 p/u truck with codes p0131, O2 sensor circuit low voltage (bank 1 sensor 1); p0171, system too lean (bank 1); and code p1133, manufacturer specific powertrain. MIL is on, engine runs just fine.
I would appreciate any help, thanks in advance for everything!
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If all these codes are with the same o2 bank 1 sensor 1 then replace the sensor.Might be a good time for a tune up if you haven`t done one.Plugs,fuel filter,air filter,and pcv valve.
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