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Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post Subaru Forester white smoke at start up I own a 2010 Subaru Forester X Premium. ...   1989 toyota pickup 3.0 crank no start I have a 1989 toyota pickup 3.0 crank no...   Strut spring orientation and strut mount tension nut 2017 Nissan rogue awd 2.5 L Put in Monro...   Transmission stuck in part, I have tried everything So I'm working on my elderly fathers 201...   2017 dodge journey LED headlights on/off randomly Year of vehicle 2017 Make of vehicle dod...   Kia Soul starter replacement issues! Okay so my car is a 2010 Kia soul 2.0 en...   Please Help - Knock sound & engine fail Hi all, Hoping to get some insight and ...   multiple warning lights 2013 GMC Terrain 130,000 miles 4 cylinde...   03 alero no low speed blower Good day everyone, I have a 2003 Olds a...   04 Chevy 2500hd tail light issues Help!!! I have changed my combo switch...

Fault Codes Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Car Troubleshooting Nbrown New User Sep 18, 2016, 12:37 PM Post #1 of 5 (1344 views) Fault Codes Sign In Vehicle: 2004 Ford Escape XLS 3.0L V6 150,0000 miles The engine light is on. I checked the codes This is what they are. p0155, p2197, and p0174. I ran seafoam fogger through the air intake and did the necesarry steps for that. Then unplugged the battery after. The engine ran great for about 10 miles and the light came back on. What's wrong and what steps can I take to correct the problem? kev2 Veteran Sep 18, 2016, 1:29 PM Post #2 of 5 (1333 views) Re: Fault Codes Sign In All o2 sensor codes Bank2 sensor 1 P0155 02 Sensor Heater Circuit Malfunction P0174 System Too Lean (Bank 2) P2197 Heated Oxygen Sensor (Bank 2 Sensor 1) Biased / Stuck Lean The first code is a CIRCUIT issue and its the heater circuit. Lack of a warmed up o2 sensor might skew the other tests. I would start here. Steps you can take KOEO is there 12v on heater circuit? Ideally you want to see the actually voltage the PCM is seeing. Help us help you Why did you fog engine ? was it to correct the issue? (This post was edited by kev2 on Sep 18, 2016, 1:39 PM) Nbrown New User Sep 18, 2016, 4:47 PM Post #3 of 5 (1319 views) Re: Fault Codes Sign In Thanks. I can look into the KOEO reading. Do those codes mean I need to replace the co2 sensors or that there is something else going on that I am using the KOEO reading for? I fogged the engine to hopefully clean off any carbon on the co2 sensors. Hammer Time Ultimate Carjunky / Moderator Sep 19, 2016, 5:23 AM Post #4 of 5 (1308 views) Re: Fault Codes Sign In Quote I fogged the engine to hopefully clean off any carbon on the co2 sensors That doesn't fix 0/2 sensors, it damages them further. There is no way to clean an 0/2 sensor. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. kev2 Veteran Sep 19, 2016, 6:28 AM Post #5 of 5 (1302 views) Re: Fault Codes Sign In the KOEO will confirm if there is 12v at sensor... Then we will check sensor heater ground and depending on those answers ohm sensor ... As I said a o2 sensor heater failure MAY skew sensor readings... then we will check the actual sensor output...   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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