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2006 Honda Accord 4 Cylinder Codes P0134 and P0139

 
Old 02-21-2019, 04:06 AM
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Icon4 2006 Honda Accord 4 Cylinder Codes P0134 and P0139

Good morning,
I own a 2006 Honda Accord 4 cylinder with 150k miles. About 8 months ago my check engine light came on and the diagnostic code read P0139. I replaced the downstream (sensor 2) O2 sensor with an after market Bosch part. I erased the PCM code and it was fine for approximately 3 months. After that the code came back. I took the car to the Honda dealer, they ran diagnostics and updated my PCM software and told me if it came back then to replace the sensor with a Honda OEM O2 Sensor. About 2 months later it came back, I just erased the code as the vehicle ran fine. It did come on one more time, and again, I just erased the code. Yesterday, the check engine light came on but this time the code was P0134. Should I replace sensor 2 O2 sensor and sensor 1 O2 with factory OEM parts? I checked the O2 heater fuses and them all were fine? Any suggestions? Thank you for your help.

Chris
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Old 02-21-2019, 04:45 AM
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Default Re: 2006 Honda Accord 4 Cylinder Codes P0134 and P0139

For Hondas as well as many other makes of cars, Bosch O2 sensors are absolute crap. I would change both your upstream and downstream sensors with either sensors from Honda or Denso (the OEM maker).
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Old 02-21-2019, 05:54 AM
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Default Re: 2006 Honda Accord 4 Cylinder Codes P0134 and P0139

Thank you, I will give that a shot.

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