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Re: Ford Aerostar OBDII fault code P0133, where is the...
O2 Sensor bank one sensor one, look at both cylinder head's the cylinder head closes to the front of the engine is bank one, the o2 sensor closes to that cylinder head on exhaust manifold is o2 sensor one .Good luck
machines reads 02 sensor bank 1 sensor 1 PO133 and system too lean bank 1 PO171Add a Commentmachines reads 02 sensor bank 1 sensor 1 PO133 and system too lean bank 1 PO171Add a Comment
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Call any auto store and they will tell you the part number, price and availability. Keep in mind that trouble codes can have other causes - for example if the connection is corroded or dirty or the wire is damaged all will result in the bad O2 sensor code. Good luck.
Check the codes again! The P0133 is O2 sensor bank 1 and the P0430 is O2 sensor bank 2.
The next step requires the connection to the OBDII port with a graphic scanner. These problems are relatively easy to diagnose with the proper tool. A graphic representation of the Bank 1 O2 sensor will tell in just a few minutes if the upstream O2 is working properly.
The attached link is worth the time to review the operation and diagnosis of your reported problem. With the knowledge of how these sensors and cat work graphically will provide you with the ability to chose the right shop to diagnose whats going on.
The link is a 30 minute tape and will provide the insight. The P0133 is the easiest to diagnose and it is the bank 1 upstream O2 sensor. The wave shape always looks like the attached photo below. The interval between peaks is about 1 second.
The problem with both banks having problems requires a review of the engine operation. Common to both problems is the engine fuel system.
Things to check are as follows:
Check and fix any exhaust leaks
Check for wiring problems (shorted, frayed wires)
Check the frequency and amplitude of the oxygen sensor (advanced)
Check for a deteriorating / contaminated oxygen sensor, replace if necessary
Check for inlet air leaks
Check the MAF sensor for proper operation
Testing the the O2 sensor an other vehicle testing procdures should be done before replacing parts . The rear o2 has nothing to do with this code . P0133 Testing H02 Sensor
An O2 Sensor Code, does not mean the sensor is bad.
You failed for the check light, not the code.
The sensor could be old and worn out,when ever you get a check light,yes, you do retrieve all codes first. Then the code is used to direct you to an area or problem, within the powertrain .
O2 Codes are caused more by vacuum issues or other issues,and the code is set, as a result of trying to correct short term fuel trim,and goes out of range,setting the light/code
check the mass air flow sensor there maybe dirt on the filiment inside the sensor causing false readings. cleaning or replacing it may make the codes go away.
This code does not always mean the O2 sensor is low, but if u want to replace it here is the info to do that and the part number.
The sensor you want is the one in the exhaust pipe of the engine cylinder bank that has #1 cylinder in it, as you face the engine with the hood open the cylinder bank u want is the rear bank, u will need to jack the car up and get under it to remove the sensor, u may also need a special socket to remove it, the sensor is the one that is before the catalytic converter. part number is:DENSO Part # 2344068 REAR; Before Catalyst
I just came from an Autozone, and then spoke with 2 Hyundai dealership service departments and they all three stated the P0113 code is the Intake Air Temperature sensor (IAT, also referred to as the Mass Air Pressure - MAP - sensor) on the engine, not an O2 sensor found in the exhaust system.
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