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2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

Both P2a01 and P2a04

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Old Aug 13, 2019 | 8:59 PM
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Default Both P2a01 and P2a04
Quick synopsis, new remanufactured engine put in with all current updates, Fraiser engine. 07 suburban is throwing both a P2a01 and P2a04. Bad sensors or what do you guys think?
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Old Aug 13, 2019 | 10:22 PM
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https://www.obd-codes.com/p2a01
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Old Aug 14, 2019 | 6:21 AM
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I've already looked up the codes. Hence why I'm here.
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Old Aug 14, 2019 | 11:24 AM
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When you hook a scanner up, what do those sensors show? No data or faulty data? Could be unplugged, wires damaged, connector damaged or O2 sensors are bad.
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Old Aug 14, 2019 | 12:49 PM
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well did you read the causes and try the all the repair procedures on the page? If ya did, you should probably mention things you've already tried.
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Old Aug 14, 2019 | 1:35 PM
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Originally Posted by KChevy75
When you hook a scanner up, what do those sensors show? No data or faulty data? Could be unplugged, wires damaged, connector damaged or O2 sensors are bad.

Ill take a look next time they pop up and report back, are there normal ranges I should expect out of each?
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Old Aug 14, 2019 | 1:37 PM
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Originally Posted by mountainmanjoe
well did you read the causes and try the all the repair procedures on the page? If ya did, you should probably mention things you've already tried.
So far this is diagnosis stage. It seems odd that I would have both pop up at the same time so I wasnt sure what to look for or if the re-manufactured engine was somehow related.
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Old Aug 14, 2019 | 1:59 PM
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I'd recheck the connections, make sure they are hooked up.
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Old Aug 14, 2019 | 2:02 PM
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Originally Posted by kevinkpk
I'd recheck the connections, make sure they are hooked up.

Ill pop under it tonight and verify. They seem to go off about once a day after I clear the codes, sometimes after driving for a couple hours, sometimes after 20 minutes.
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Old Aug 14, 2019 | 8:15 PM
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Connections looked good, while normal driving both sensors in question would range between .3 and .8V with an average of .4v

One the code pops again I'll read it at that time and update
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