Question about 2002 Ford Ranger Regular Cab

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Oxygen sensor my check engine light went on, so I had it diagnosed at my local autozone. They told me it was the oxygen sensors. I bought them but haven't replaced them just yet. Now my truck trembles when im stopped, or parked, and jerks when I turn it on and put it in drive or reverse. Is it the oxygen sensors or is there more to it? Is there a special procedure in replacing the oxygen sensor? I'm not an expert, and just learning about cars.

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Yes, its the oxygen sensors. install what you bought.

Posted on Jun 17, 2008


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I have 2006 Kia Sorento, the engine light is on and I had it check ane they told me it PO131 and PO 134 can you tell me what is going on?

Both of those codes typicall refer to bad or disfunctional Oxygen Sensors. Take your car to AutoZone and they will hook upo their diagnostic tool to your car and diagnose the problem for FREE.

Jul 27, 2011 | 2006 Kia Sorento

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Hi, no, they are not related. The oxygen sensor(s) are part of the ignition/emissions sytem and help regulate fuel flow/mixture. The A/C system is self contained and does not affect other engine systems. Mike

Jun 14, 2011 | 2009 Saturn VUE Hybrid

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Check engine light is on but theres no problems with my truck

Unfortunately, this is a common problem with the Fords. The only way to be certain, is to take it to your local auto repair shop or AutoZone and have it diagnosed with a computer. AutoZone will do it free of charge. If the vehicle is still running properly, it is usually something like an oxygen sensor in the exhaust, and at $125 each for the 5 of them, it is usually not worth dealing with. Just have to learn to live with the dash light being on. Good luck!

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I have an engine light on to my Toyota Corolla 2003; diagnosed by the autozone OBD11 SCANNER P420. I replaced the oxygen sensor and the light deleted. After driving the car for 30 miles the light came on...


The trouble areas associated with this code are as follows:
1)Gas leakage on exhaust system
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3)Heated oxygen sensor
4)Three–way catalytic converter

The idea is to check for exhaust leaks first then the front sensor and rear sensor. If these all check out then the cat needs to be replaced.

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Jul 13, 2009 | 2003 Toyota Avalon

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I have a 2002 Volvo S60 T5. Here's the problem: I started the car, shifted into drive, hit the gas and the RPM's went up but the car barely moved. I shut the car off and restarted it then it worked. Now...

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2001 Nissan Maxima service engine light stays on code from Auto Zone scanner is PO139 and PO138. What should my next step be to solve this problem.

code p 0138 refers to 2 items
1--heated oxygen sensor(HO2S) 2 bank 1--high voltage ==causes --wiring short to positive --HO2S---ECM
2--oxygen sensor (O2S) 2 bank 1--high voltage ===causes wiring short to positive ---ECM
code p 0139 refers to 2 items
1--- heated oxygen sensor (HO2S) 2 bank 1--slow response ===causes --heating inoperative --wiring--ECM
2--oxygen sensor (o2S) 2 bank 1 slow response ===causes --wiring --- O2S

heated oxygen sensors9HO2S) are in the exhaust manifold before the cat converter
Oxygen sensors (O2S) are after the cat converter
it is indicated that the HO2S is faulty-
check the wiring and /or replace both sensors

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Check engine light - P0420 code

Causes A code P0420 may mean that one or more of the following has happened:
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  • An oxygen sensor is not reading (functioning) properly
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  • Damaged or leaking exhaust manifold / catalytic converter / exhaust pipe
  • Retarded spark timing
  • The oxygen sensors in front and behind the converter are reporting too similar of readings

Please rate this solution thanks

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O2 Sensors

Autozone oxygen sensors do not function properly in Toyota vehicles. Just had a Tacoma yesterday with the same issue. New sensors, runs poor, check engine light on. Toyota sensors fixed it right now.

Dec 29, 2008 | 1996 Toyota Tacoma

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