Fault Codes/Power Solutions International, Inc./154Power Solutions International, Inc.154UnclassifiedElectricalWhat This Code MeansHO2S voltage fixed between 0.4 and 0.6 volts; EGO2 Open/LazyPossible Causes•HO2S signal or analog return circuit resistance of 5 ohms or greater•HO2S heater low side or high side circuit resistance of 5 ohms or greater•HEGO impedance feedback not within +/- 50 ohms of target•Faulty HO2S sensorSuggested Actions1Repair wiring harness and retest2Replace HO2S Sensor and retestRelated Power Solutions International, Inc. Fault Codes160 216031236987122DTC 107112DTC 237DTC 562DTC 642165 3Browse all Power Solutions International, Inc. fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 154 on your specific Power Solutions International, Inc. unit — cited to the OEM manual, not a forum guess.TRY IT FREE