2001 Chevy Silverado 5.3 automatic

Question

Computer keeps coming up with po140 and po 160 all the wires seem to check out catalytic converters are working but the back both backhoe to stay at .45 and do not move

Answer 1

Hi there,

These codes indicate an issue with the O2 sensors on bank 1 and 2 sensor 2. Here is a list of possible causes for these codes.

P0140 CHEVROLET - O2 Sensor Circuit No Activity Detected Bank 1 Sensor 2

Read more: https://www.autocodes.com/p0140_chevrolet.html