whywould the low voltage po157 low voltage code keep coming on in 2000 Chevrolet Silverado, 6 liter engine.

Question

The low voltage code po157 comes on at times when driving slowly for a time. No other code EVER comes up.

Answer 1

Hi there

This code is normally the result of a faulty sensor, however other things can cause it as well. Fuel pressure, exhaust or intake manifold leaks.

P0157 CHEVROLET - HO2S Circuit Low Voltage Bank 2 Sensor 2

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