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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   Camshaft Adjuster - Car not starting Mercedes s500 2017 - I am reaching out t...   Door locked shut Hello, New here and really nee...   Hey, I'm Brandon – Questions About Keyless Ignition Hey all, I’m Brandon! Just a car enthu...   Can't drive out nut from steering knuckle 2005 FORD MONDEO III Stationwagen (BWY) ...   2001 Chevy Cavalier 2.2L automatic radiator fan not running 2001 Chevy Cavalier 2.2 L , radiator coo...   SPRING TIME. TIME TO CHECK YOUR SPARE TIRE Take your tire out, inspect the tire and...   2011 Honda Pilot Sideview Mirror Compatibility Hello, I just bought a 2011 Honda Pilot...   Mitsubishi Lancer 2008 2.0 DID Fuel Pump Problem I moved my car and after 2-3 hours I sta...   Question about my Alternator on a Nissan 2002 Nissan Sentra 1.8L, 210,435 miles ...   Going to school to become a mechanic. I need help understanding the vacuum modulator. I've done my research and asked my teach...

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 (1443 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 (1432 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 (1418 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 (1407 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 (1401 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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