Question about 2002 Ford Taurus

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O2 bank1 sensor1 has been replaced but the same code keeps coming back what else could i look for

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Could it be that bank 1 is on the other side of the vehicle and you have changed the wrong one ?? right bed time in this time zone also the fixya site is overloaded as its taking me a good 30 secs to make a posting so any comments i will answer tomorrow for you

Posted on Aug 01, 2010

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Posted on Jan 02, 2017

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Pcm codes keep coming back replaced all 02 sensor with ACdelco and reprogramed the PCM


What are the exact codes you have said where but not what is going wrong, they can be high, low etc

Sep 12, 2016 | 1997 Cadillac DeVille

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Code P0053 fault bank1 sensor1 heated o2 sensor


A blown O2 fuse or a short or resistance in the wiring can set this code. A ECM/PCM internal fault can also be the problem.

Jun 30, 2015 | Cars & Trucks

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What is the cost to replace o2 censor ?


There are four of them on your vehicle. Two before the catalytic converter and two after. Each one is going to have a different price and labor time to replace. Do you know which one needs to be replaced? Bank1 sensor1, bank2 sensor1, bank1 sensor2, bank2 sensor2? On average $50 to $100 dollars for the part. And figure an hours worth of labor.

Feb 22, 2015 | 2005 Ford Freestar

1 Answer

Where is o2 sensor bank 1 sensor 2 on 2009 kia sornento


bank 1 is the side that cylinder #1 is on then if you follow the exhaust back from the manifold the first sensor is bank1 sensor1, continue along the exhaust until you come to the 2nd sensor this is bank1 sensor2.

Aug 23, 2014 | Cars & Trucks

1 Answer

On the audi a4 2003 what are the codes P 0135 and P0234?


Code P0135 -
Oxygen O2 Sensor Heater Circuit Malfunction (Bank1, Sensor1)

P0135. Turbo boost pressure too high.

O2 sensor heater malfunction: ...Check all fuses. If good, replace O2 sensor.

Over boost: Check N75 Boost control solenoid and all vacuum hoses to and from N75.

Oct 30, 2013 | 2003 Audi A4 Cabriolet

1 Answer

Hi, I have a 96 Jeep Cherokee with straight 6 cyclinder engine.The check engine lights on and Itook get to be put on a machine and the codes readed P0132,P0135,P0300,P0301,and P0420. Could you tell me


p132+ an O2 sensor reading is high bank1,sensor1, p135=O2 Heater circuit is bad, bank1,sensor1.

P300= Random misfires, p301 misfire cylinder1.p302 misfire cylinder2

p420 Bank1 Catalytic converter efficiency failing

What this means is that the Bank1 O2 sensor is either bad or the wiring to it is defective. Check for heat burnthrough on wires. The misfires started randomly and now pinpoint to cylinders 1 and 2.

The Catalytic converter failing because the misfires are clogging it. This can self correct once the cylinders stop misfiring.

Which messed up first is where you start solving this. Replace the O2 sensor, it is fouled out on Bank1. The heater circuit(p135) just makes it work faster and has little effect once you are underway. But high resistence in the O2(p132) means it is coated and ineffective.

There is a problem with firing #1 and #2 sparkplug. Probably the cause for the Catalytic converter plugging. A cracked coil, plug wires, sparkplugs are some causes as well as dirty fuel injectors on those 2 cylinders.

It is a cause and effect situation where 1 part fails and damages another. You need to fix the source of the problem or you will repeat th damage.

Oct 01, 2012 | Cars & Trucks

1 Answer

How to fix a 2002 dodge durango with p0051,p0136,p0031 codes


All 3 of these Codes have to do with the O2 devices. Some are saying the heating elements are returning low signals. These elements are built inside the O2 sensors and are designed to make your vehicle get out of "rich" mode faster.

Bank2 sensor1, Bank1 sensor1, Bank1 sensor2. Check your connections and the wiring leading to these parts.

You may need to replace these O2 sensors if the wires are good.

Sep 15, 2012 | 2002 Dodge Durango

1 Answer

1997 ford f150


your truck should have four o2 sensors bank 1 sensor 1 is o2 sensor on cylinder 1 side before cat and bank1 sensor2 two is 02 sensor after cat banks 2 sensor1 is on other side berfore cat and bank2 sensor2 is after cat hope that helps when they read code it should tell you bank1 sensor1 or2 good luck

Aug 23, 2012 | 1997 Ford F150 Regular Cab

2 Answers

My 96 Chevy Blazer 4X4 failed echeck, due to codes: P0132(bank1, sensor1), P0135(bank1, sensor1), and P0143(bank1, sensor 3). All are O2 sensor codes. What sensors need replaced, and where are they...


Some of your O2 sensors are before the catalytic converter and some are after, based on your description. I've seen some cars that had to have all of the O2 sensors replaced when the exhaust system was replaced.

O2 sensors need a special socket to remove, and are best done when the exhaust is hot, and, also, antiseize compound should be used on the threads with the new O2 sensors.

Be prepared to have an exhaust technician change them out for you in order to get it passed the eCheck.

Good luck on this repair.

Dec 19, 2010 | 1996 Chevrolet Blazer

1 Answer

O2 sensors trouble codes come back/after being replaced


What were the codes??? You should have gotten one code if it was only one O2 sensor that went bad. If all three O 2 sensor went bad you would have gotten three different codes. P0031 (bank1 sensor1) P0051 (bank2 sensor2) P0061 to P0064 O2 sensor after the catalytic. Hops this helps. 

Jul 03, 2009 | 1999 Chevrolet S-10 Pickup

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