WHAT IS A BAD O2 READING

most of the bad gasses while still giveing the o2 sensor a good o2 reading.

A cracked O2 sensor can give a negative voltage reading. I went back to the dealer, who accepted that the. It looks at air temp, engine temp, O2 reading and more to determine what to do. What kind of o2 reading are you getting at normal cruising?. My dr immediately put me in the. 15 posts - 8 authors - Last post: Oct 3, 2010p0171 = bad O2 Sensor? Turbo Powertrains (2.0GT, 2.5GT, 2.5XT). Do you have to turn off your car when you're pumping gas into it?.. a bad O2 sensor can cause power loss, poor mileage, etc. O2 sensor bad? SES light on.

Does it mean the O2's are reading too rich and telling the ecu to go leaner?. The o2 sensor reading should go rich, reacting to the extra fuel added. OK, my first post -- I apologize in advance for its length, but the reason I joined this forum is a bit complicated. Your O2 sensor controls the air fuel mixture by reading an alternate. I have ScanMaster-ELM software . 8 posts - 7 authors - Last post: Mar 17, 2007A bad O2 reading can damage many things, but the hard plastic/steel line running from the gas tank to the engine is not one of them. 14 posts - 6 authors - Last post: Jun 26, 2006What are the symptoms of a bad Oxygen sensor and will a bad one make. 13 posts - 4 authors - Last post: Nov 4, 2005All I have to add is that the last time My O2's went bad I. Funny how it ends up being something else. A complete strategy guide to diagnosing these troublesome Oxygen Sensor Codes.

The O2 reading will also be high. Less common causes include bad spark plug wires, worn or fouled spark plugs. The guy at autozone pulling the codes said it ment a bad o2 sensor reading. I too had a low oxygen level reading of 84. i have 2 bad o2 sensors on my car and i got a test run and it said. 19 posts - 7 authors - Last post: Aug 12, 2007Car Forums Symptoms of bad O2 Sensor Engineering/Technical. and will blindly adjust the fuel trim based on the O2 readings, and have no. Bad Oxygen Sensor The O2 sensor measures the amount of oxygen present in the.

Typically, a bad O2 sensor will read low (lean), which causes the engine to run too rich, pollute too much and use too much gas. One symptom of a bad oxygen sensor is your Corolla using an excessive amount of gas. Bad valve seals = Bad O2 Sensor.. If the O2 sensor is taking significantly longer to reverse readings, this too is an. So I'm guessing that the o2 sensor isn't reading properly. How much gas do I save by replacing a defective oxygen sensor? More Mileage and fuel economy Information. possibly due to a bad MAP, MAF or Air Flow sensor or leaky injector.

Figured it was a bad O2 sensor, so I changed it out for a new one from Bosch. A low reading can be caused. For example, if the oxygen reading is high (rich), the engine computer. 3 posts - 3 authors - Last post: Apr 10, 2009I have Lexus LS400 2000 model. Code read P0138 - which is O2 sensor before cat. Running rich, bad o2 sensor?. 3 posts - 2 authors - Last post: Oct 6, 2002[Archive] bad o2 reading and bad idle, related ? Help! Tech. Usually the cause of P0130 is a bad oxygen sensor, however this isn't always the. 18 posts - 9 authors - Last post: Mar 27, 2008I tested my o2 sensor's voltage briefly, and it was reading something like 2.4V.

The problem is that the lack of a reading from the o2 sensor is causing the problem (ie: if I. I thought I had bad O2's. Learn the signs of a bad oxygen sensor so you can take quick action. 10 posts - 6 authors - Last post: Feb 6, 2009Page 2- bad o2 sensors Engine & Performance. Flooring the engine, power would die above. 10 posts - 6 authors - Last post: Jul 1, 2005If you have a bad 02 sensor you will throw a check engine light. 13 posts - 6 authors - Last post: Jan 22, 2007Checked the wiring and it looked fine so deffo a bad O2 and no CEL. What is a bad ohms reading for a o2 sensor? The o2 sensor is bad if the engine displays some loss of power because this causes the engine to use too much.

21 posts - 4 authorsBad O2 Sensor? Cat? What is this telling me? Under the Hood. 2 posts - 2 authors - Last post: Jun 20, 2009While im logging the o2 reading just jumps all over the place, at 1062 rpm it jumps from 11 to 76 to 13 to 78. 4 posts - 3 authors - Last post: Nov 14, 2005How to tell bad o2 sensor? Tuning, Diagnostics, Electronics, and Wiring. I am trying to understand the. The computer compares the readings from the oxygen sensors (pre cats) and. 6 posts - 1 author - Last post: Feb 3, 2007Running rich, bad o2 sensor? My car has been running very rich even with the. There are two sensors before the. Gas is technically a state of matter where molecules are in an. The incorrect reading supplied by the sensor can cause the air fuel mixture to. 27 posts - 14 authors - Last post: Jun 29, 2010[Archive] Unichip failure or bad o2 sensor?.

if you have a sensor that is stuck reading a rich condition on a. it basically looks like a.