Question about 1996 Ford Explorer

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We have replaced the o2 sensor (bank 1/sensor 1) twice, but we are still getting error code PO133. What else could the problem be?

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Theres a large possibility it may have more to do with your egr valve, or one of its components. these routinely clog up and can cause a o2 sensor code. hope this helps and good luck!

Posted on Apr 03, 2011

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Throwing 1 code po133, pending code po171


Nice info but what's your question ? You have a Oxygen Sensor Circuit Slow Response (Bank1, Sensor1) code P0133 , an you have P0171 System Too Lean (Bank 1) ! You have a bad O2 sensor , vacuum leak , Test O2 Sensor mov

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Are you absolutely sure that you replaced the correct side sensor. It has two front (upstream) oxygen sensors. Aftermarket intake or exhaust components can cause this code. Poor connection at O2 wires possible. Could be wrong part number sensor.

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Obd system check -fail


It means that the O2 sensor isn't switching as fast as it should. Make sure there are no vacuum or exhaust leaks. Most Likely you got a lazy O2 sensors which would require replacement.

Apr 17, 2014 | 1998 Saturn SL

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1996 Oldsmobile LSS. Went to autozone and got code PO133. 'Fuel system running rich or lean- check other aacodes first.' and 'Oxygen sensor defective'; The guy said it probably isn't the oxygen sensor; as...


code P0133 is : o2 sensor circuit slow response (bank 1 sensor 1)
meaning;;;one heater on o2 sensor is not heating fast enough or no heat.
look for o2 sensor heater fuse first
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Oct 17, 2013 | 1996 Oldsmobile LSS

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Troubleshooting po133


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Dec 05, 2012 | 1999 Chevrolet Malibu

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P 0133 mod $10 1/2 o2 sensore is the code on my van after the service engine soon


PO133- O2 Sensor on Bank 1 Sensor 1
Slow to respond

Most likely worn out,if over 100,000 miles
on it

Don't know what else you typed there

Apr 22, 2011 | GMC Savana Cars & Trucks

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I have the P0133 code bank 1 sensor 1, i know it could be the O2 sensor but when i disconnect the service hose leading to the evap canister it runs better but only for a little bit. im not sure why that...


CODE PO133 O2 BANK 1 SENSOR 1 SLOW RESPONSE. POSSIBLE CAUSES, LOOK FOR EXHAUST LEAK IN THE EXHAUST MANIFOLD OR EXHAUST PIPES. THE O2 SIGNAL CIRCUIT OR UPSTREAM CIRCUIT HAS FAILED, THE O2 ELEMENT HAS FAILED.COULD BE THE O2 SENSOR ALSO YOU COULD HAVE A VACUUM LEAK OR EXHAUST MANIFOLD LEAK.

Apr 18, 2011 | Dodge Stratus Cars & Trucks

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I Have 7 codes on my 2000 Ford Taraus PO743, PO750, PO755, PO760, PO442, PO133, P1131. Would you be able to tell me what those problems are?


P0743 Torque Converter Clutch Circuit Electrical
P0750 Shift Solenoid A
P0755 Shift Solenoid B
P0760 Shift Solenoid C
P0442 Evaporative Emission System Leak Detected (small leak)
P0133 O2 Sensor Circuit Slow Response - Bank 1 Sensor 1
P1131 Lack of Upstream Heated Oxygen Sensor Switch -Sensor Indicates Lean -Bank 1

The transmission has a problem with shifting, and the evaporative emission system has a small leak, the O2 sensor has a problem on Bank 1 Sensor 1 either in the sensor or wiring.

Feb 18, 2011 | Ford Taurus Cars & Trucks

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I fix my camshaft sensor cost $548.00 at dealer they said that po133 code (oxgen sensor) need to be replaced but that code did not pull up on my scanner only p1309 what should i do?


The code po133 means o2 sensor checked slow (response 1/1). You will need to replace the o2 sensor to correct the problem. You can purchase the o2 sensor yourself and replace it at home. It's no big problem in doing it yourself unless you want to take it back to the dealer. Hope this will help.

May 20, 2010 | Cars & Trucks

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