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I recently changed my 02 sensor on my Accord.

Tiny
AKINYEMIAKINSEYE
  • MEMBER
  • 2004 HONDA ACCORD
  • 128,000 MILES
I recently changed my 02 sensor on my accord because a p0141 DTC code, I replaced the 02 sensor with a bosch replacement and the CEL went off, After driving for two days the CEL came on again with the DTC code p0138. I am stuck and I don't know how to repair this problem I thought replacing the 02 sensor will solve the problem but somehow it has not. I will appreciate all the help to clear the CEL.
Thanks
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Thursday, April 4th, 2013 AT 3:46 PM

10 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
The same sensor is giving you problem. P0141 is a heater circuit malfunction.

P0138 is high voltage. Either the sensor is not compatible (which is the likely cause) or the wirings are not installed correctly.
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Thursday, April 4th, 2013 AT 4:40 PM
Tiny
AKINYEMIAKINSEYE
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Thanks for the quick reply, let me check if it's a wiring problem before I decide to replace the sensor itself, could you please provide a picture or a diagram showing all wirings including the connector
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Thursday, April 4th, 2013 AT 5:24 PM
Tiny
KHLOW2008
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First diagram shows the connector identifications.
Second shos the wire colors and connections.
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Thursday, April 4th, 2013 AT 5:32 PM
Tiny
AKINYEMIAKINSEYE
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Thanks for the reply, but my wiring has 2 white wires, 1 black and 1 grey
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Thursday, April 4th, 2013 AT 5:38 PM
Tiny
AKINYEMIAKINSEYE
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Thanks for the quick reply, but my wiring has 2 white, 1 black and 1 grey
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Thursday, April 4th, 2013 AT 5:51 PM
Tiny
KHLOW2008
  • MECHANIC
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That is for the V-6 engine.
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Thursday, April 4th, 2013 AT 6:26 PM
Tiny
AKINYEMIAKINSEYE
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Thanks again, my accord has a 2.4 engine, is this new picture for a 2.4 engine
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Thursday, April 4th, 2013 AT 6:53 PM
Tiny
KHLOW2008
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This is for the V6. The first is for the 2.4.
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Thursday, April 4th, 2013 AT 7:37 PM
Tiny
AKINYEMIAKINSEYE
  • MEMBER
  • 7 POSTS
Hi all,
I followed the instructions above and noticed the 02 sensors' voltage now hovers between 0.250 and 1.1 is this normal.
Secondly I took off the battery terminals and put them back after sorting out the wiring and noticed the cel blink about 3 times and go off. Is this good or bad. Looking forward to your reply.
Thanks
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Friday, April 5th, 2013 AT 6:21 PM
Tiny
KHLOW2008
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The voltage should be 0.75 volts with key on and engine off. Wht you are getting should be normal.

The MIL should not blink. Does it blink each time you turn the ignition on or only once?
Are you getting any trouble codes now?
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Sunday, April 7th, 2013 AT 3:32 AM

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