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Hi I just had a some check done. The 2 upfront oxygen sensors where bad. I changed them and now about a week later the engine light is on. Any ideas?? Thanks in advance

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Have to reset computer

Posted on Jul 26, 2008


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1991 honda accord ex check engine light on. PO code 430. I have changed the oxygen sensor. After couple weeks, check engine light came on. the car drive rough on the idle.

code p 430 refers to catalytic converter system , bank 2---efficiency below threshold ====causes ---cat converter--wiring ---Heated oxygen sensor (HO2S in the exhaust manifold bank 2 before the cat converter)
have the cat converter checked for failure and blocking the exhaust

Dec 01, 2017 | Honda Cars & Trucks

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There are 2 oxygen sensors on my ford escort 2001. one before and one after the catalytic converter. how can I tell if one or both are bad. I had it diagnosed when the check engine light came on.

Replace both, this will save you having to do it later and all the costs associated with putting it on a lift a second time. The sensors do not cost much, the labor on the other hand, well that all depends on who you go to. If you have the ability to get under the car, do it yourself it is an easy fix. Buy the sensor from Autozone or O'Reilly and they will allow you to use the digital testor to reset the check engine light.

Mar 07, 2016 | Ford Cars & Trucks

3 Answers

PO-139 I had that sensor change 3 weeks ago and the check engine light came on again this morning.Thanks

Probably replaced a good sensor. This codes could be from a bad sensor, a vacuum leak, or an exhaust leak before the sensor.

Dec 01, 2015 | 2006 Hyundai Tucson

1 Answer

0152 coed

P0152 P0152 - O2 Sensor Circuit High Voltage Bank 2 Sensor 1Possible causes - Faulty Front Heated Oxygen Sensor Bank 2
- Intake air leaks may be faulty
- Exhaust gas leaks
- Front Heated Oxygen Sensor Bank 2 harness is open or shorted
- Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
eplacing the Front Heated Oxygen Sensor Bank 2 usually takes care of the problem
Symptoms- Engine Light ON (or Service Engine Soon Warning Light)
- High Fuel Consumption
- Excessive Smoke from Exhaust P0152 Description The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

Mar 19, 2013 | 2005 Dodge Ram 1500

1 Answer

6 months ago, replaced head gaskets. 1 week later, service engine soon light came on. Tech said it was an oxygen sensor. Cleared code. 3 weeks ago, got oil change, replaced headlights and replaced...


Jun 26, 2011 | 1999 Chevrolet Venture

2 Answers

Our van has been stuttering

might be time to get a tune up done.

Oct 04, 2009 | 2000 Nissan Quest

1 Answer

Need info on codes PCM.P0134 and P0420

Both codes are for the oxygen sensors.
P0134 oxygen sensor on bank #1, sensor #1 is bad.
P0420 oxygen sensor on bank #1, the sensor down by the catalytic converter, is also bad.

Mar 26, 2009 | 2003 Honda CR-V

1 Answer

Check Engine light is on

I would recommend that you change all oxygen sensors at the same time. A little expensive but it will save you the the aggravation of changing one at a time. Get it all done at once. anyhow the bank 2 sensor 2 is the Right side manifold second sensor the one closes to the catalytic converter. good luck. thanks for using FIX YA

Mar 13, 2009 | 2000 Toyota Tundra

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