Question about 2006 Chevrolet Cobalt SS

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Check engine light and T/C light come on. Machanic changed Bank1 Sensor1. Lights stayed of for a very short time less than 15 miles, both came back on. Machanic checked it with computer, no good answe

When the problem first come up tester said need to replace oxidant sensor.

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  • Chevrolet Master
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I doubt the code said to replace the O2 sensor. It probably said there was an issue with the data it was sending to the computer.
Sometimes the sensor is faulty, and sometimes there is a problem with the fuel system.
The O2 sensors give the computer data it uses to adjust fuel mixture.
If you can get the actual trouble code or codes we can advise.

Posted on Jan 17, 2013

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: i have a 1999 chevy

Replace the catalitic converter.

Posted on Jul 13, 2011

afarri
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SOURCE: check engine light on replaced

Hello and welcome to FixYa!
You may need to drive it for atleast another 20 miles to reset the system. If the problem still persists, I strongly suggest that you remove the positive battery connector and let it sit for atleast 5mins. before reconnecting it. This will reset the system and can get the check engine light.
Hope this helps and thank you for using FixYa! Have a good one!

Posted on Aug 21, 2011

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1 Answer

How many o2 sensors on a 2007 honda accord w/4 cyl. engine?


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Why are you going back to a shop that can not
diagnose an O2 Sensor issue?
The only help you can get, is from someone properly
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were, or were they the same every time
What was tested & how,that is the key.
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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.

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Check enegine light stay s on all the time, here are the codes im getting, if someone could tell me how to fix these that would be great. p0155 p0141 p0136 p0443 p1451 p0135 p0161 p1409


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P0141: O2 Sensor heater Circuit Malfunction (bank1 ) Sensor 2.

P0135: O2 Sensor heater Circuit Malfunction (bank1,Sensor1)

P0136: O2 Sensor Circuit Low voltage (bank1) Sensor 2.

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P0161: O2 Sensor Circuit Low voltage (bank2,Sensor2)

P1409: Electronic Vacuum Regulator (EVR) control circuit malfunction.

change the O2 sensors first,Then check the the EGR Vacuum regulator for any Malfunction. Good luck

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