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How can you tell which o2 sensor is bad if there are 4 of them?
Wiki User
∙ 13y ago
The check engine light will appear. USUALLY A GOOD OBDII SCANNER WILL TELL YOU WHICH O2 SENSOR IS FAULTY EITHER BE A SPECIFIC CODE OR DIRECTLY. THE CHEAP SCAN TOOLS MAY ONLY TELL YOU THAT YOU HAVE AN "o2 FAULT"
Wiki User
∙ 13y ago
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Will auto zone check an 02 sensor in a car?
If your car has OBD2(96 and newer) they will hook up a code reader. If you do have a bad O2 sensor the scanner can tell which one is bad. Most v6 and v8 engine have 4 sensors.
Where is o2 sensor on a 1998 Chevy truck 4.3?
there are at least 4 on it one on each side of the motor on the manifolds one before and after the cat convertor you have to take it to a shop and they can tell you which one is bad.
Cost to replace O2 sensor on a 2002 Mitsubishi Montero sport?
If its just one sensor, it is usually about $90 each sensor. Just a recommendation, do not use the wire yourself models, they don't last as long. Keep in mind that there are 4 02 sensors on that rig. You will need to get a obd unit to scan the problem and tell you what sensor on what bank is bad. Hope that helps
What is the part number for an O2 sensor bank 1 sensor 1 in an 2002 Mitsubishi Galant 4-cylinder?
Mitsubishi Galant, 2002, 4-cyl, O2 sensor, bank 1 sensor 1 (upstream)... PART NUMBER: MR506364
How many wires does a 1995 Honda civic lx oxygen sensor have?
4 wires, the black ones are the O2 heater (on the sensor side), the white and green are the O2 sensor itself
How do you replace the O2 sensor in a 1999 ford expedition?
First you need to determine which O2 sensor needs to be replaced, there could be up to 4 of them if you have duel exhaust. A bad O2 sensor would illuminate the check engine light in which case the code(s) stored would lead you to the faulty sensor. Once you have determined which O2 sensor needs to be replaced, unplug the O2 sensor harness from the vehicles harness. If you are replacing the sensor with a new one go ahead and cut the wires off of the old sensor. This will allow you to slip a 7/8" box wrench over the sensor to remove it CCW. Install the new sensor and tighten it with a 7/8" open end wrench and tighten as you would a spark plug. No need to over tighten it. Reconnect the new O2 sensor to the vehicles harness, done.
How do you splice a 4 wire o2 sensor for a 2000 kia sephia?
You don't. Buy the correct sensor.
Where is the oxygen sensor bank 1 sensor 1 located on 2005 Rave 4?
Bank 1 is the bank of cylinders that contain cylinder 1. The O2 Sensor 1 is the O2 sensor located in the exhaust system between the cylinder head and the catalytic converter, also known as the "upstream" O2 sensor.
How to fix Honda Accord DTC P0141 Heater Circuit Bank 1 Sensor 2?
DTC P0141 Indicates "O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)". Bank 1 Sensor 2 is the HO2S after the catalytic converter.On a 4 cylinder engine it is the sensor on or after cat. It could be a bad wire or a bad ecm most of the time it is the Sensor that goes bad. On a 6 cylinder engine with 4 oxygen sensors it is the bank with cylinder one, sensor after catalytic convertor.
Where is the o2 sensor located before the cat on 1999 4runner v6 4wd and where is the airfuel sensor that may be mistaken for the pre cat o2 sensor?
The sensor between the cat and the engine is the air fuel ratio sensor, it looks like an o2 sensor. The o2 sensor is between the cat and the tail pipe. The forward sensor is the af sensor t he rear one is the o2 sensor. Thar answer is for the calif. vehicles. Fed may be different but I dont think the 4 runner had two o2s like some of the sedans. fairly visable tho.
Where is the O2 sensor on a 1999 Ranger XLT 4 liter and how do you replace it?
the upstream O2 sensor is directly below thethe exhaust manifold flanges, above the catalytic converter. The downstream O2 sensor is in the exhaust pipe. Disconnect the electrical connectors and screw it out
What is the cause you are getting fault codes on all 4 O2 sensors on a 1997 ford Thunderbird with a 4.6 L I clear them and they all come back.?
cats maybe bad The problem causing the trouble codes must be addressed before clearing the codes will do any good. The O2 sensors will still be bad no matter how many times you do it. How do you know that all of the o2 sensors are bad? did you test them, did you get multiple codes for sensor failure displaying bank 1 sensor 1, bank 1 sensor 2, bank 2 sensor 1, and bank 2 sensor 2? Get a proper diagnosis, you are probably looking at 1 bad sensor and you need to know which one. On board diagnostics are great but they cannot self repair a vehicle.
