Johns06yota
Member
Quick question a buddy of mine got some URD o2 simulators as we had to remove the cats for a project we are working on. Since then we cannot tell why they aren't working properly. On his scanner its reading zero volts for both of the o2 sensor wires that are now connected to the simulators. Due to this its throwing several lean codes P0171, p0174, p0157. Any suggestions on why they arent working?