One time P0141 code - Drive Accord Honda Forums | radio-pro.ru
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post #1 of 9 Old 12-09-2015, 04:51 AM Thread Starter
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One time P0141 code

Had a check engine light come on this morning as I started the car. I didn't want to drive with a CEL on so I pulled out my OBD scanner and scanned the code. It came up as a P0141 which I believe is for the secondary O2 sensor. I cleared the code with my scanner and it hasn't come on during the next few engine starts.

If it doesn't come back on, is it nothing to worry about?


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post #2 of 9 Old 12-09-2015, 05:18 AM
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Had a check engine light come on this morning as I started the car. I didn't want to drive with a CEL on so I pulled out my OBD scanner and scanned the code. It came up as a P0141 which I believe is for the secondary O2 sensor. I cleared the code with my scanner and it hasn't come on during the next few engine starts.

If it doesn't come back on, is it nothing to worry about?
Mine threw that code last winter when it was very cold, and I was driving on the highway. My S.W.A.G. was that 60mph during cold weather was not allowing the cat to heat up properly. My luck was that it came on a couple of days after my yearly State inspection.
It hasn't been back.

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post #3 of 9 Old 12-09-2015, 01:55 PM
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The P0141 code is saying the secondary sensor did not start sending data quickly enough. The O2 sensor has to heat up to about 600 to 650 degrees before it will generate a signal. The heater will bring the sensor up to temperature in 20 to 60 seconds. So if the ECM determines it took too long for the sensor to send data it assumes the heater is not working. That is when it sets the code. So it is possible that the heater is weak and colder outside temperatures cause the O2 to not heat up as fast.
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post #4 of 9 Old 12-09-2015, 07:40 PM Thread Starter
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The P0141 code is saying the secondary sensor did not start sending data quickly enough. The O2 sensor has to heat up to about 600 to 650 degrees before it will generate a signal. The heater will bring the sensor up to temperature in 20 to 60 seconds. So if the ECM determines it took too long for the sensor to send data it assumes the heater is not working. That is when it sets the code. So it is possible that the heater is weak and colder outside temperatures cause the O2 to not heat up as fast.
Interesting. The code actually came on right as I started the car, not after 20-60 seconds. After I cleared it with my scanner, it hasn't come on since. When it came on this morning, the outside temp was about 45 degrees F. Last week it dipped into the 30F range and the light never came on.

I'll keep an eye on it and see if the code comes back on. If I see the same code a couple more times I'll go ahead and replace the secondary O2 sensor.

Is the $40 Denso one comparable to the OEM one?



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post #5 of 9 Old 12-10-2015, 04:36 AM
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I got that code as while and right before my state inspection. I replaced mine $40 also with O2 Sensor socket.

Granted I rode around with it for a few months. Replaced it cleared the code hasn't been on since got partial inspection done she passed for omission. But I failed for window tint rear only at 20%

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post #6 of 9 Old 12-10-2015, 08:00 AM
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The code P0141 can also be set if the resistance on the heater circuit is not within +/- 10% of 8ohms. As well as heater voltage being +/- 10% of Battery voltage. So there are multiple reasons the code can be set, but all revolve around the sensor or the wiring to the O2 sensor.
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Current Honda vehicles
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1991 Accord LX auto sold 185k miles
1995 GSR sold miles
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post #7 of 9 Old 12-14-2015, 02:36 PM
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Whenever I get a code, I clear it twice. The third time, I'll pay attention.

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post #8 of 9 Old 01-03-2016, 02:46 PM Thread Starter
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Whenever I get a code, I clear it twice. The third time, I'll pay attention.
That's my policy also. The same code came on a few more times last week. I bought a OEM Denso O2 sensor and just replaced it the other day. Less than $40 shipped, and not too difficult of an install either!

So far so good.

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post #9 of 9 Old 01-04-2016, 06:56 AM
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Best move to make. I replace O2 sensors as soon as there is any sign of P042x. They sit in hot exhaust and will not last forever.
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