P21000 OBDII Code, What is it?

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05-02-2014, 01:28 PM

brutus27

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P21000 OBDII Code, What is it?

Just attempted to smog (California) my 08 350Z. It threw a P21000 Trouble Code!
Does anyone know what it is? Thanks in advance for any info.

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05-02-2014, 05:43 PM

icer5160

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Hey Brutus, check this thread out in the forums, someone had a similar issue:

https://my350z.com/forum/maintenance...-ii-codes.html

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05-02-2014, 06:25 PM

brutus27

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thanks for the link icer. I guess I'll take it in to the dealer. looks like it needs an ECU reprogram.

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05-03-2014, 02:26 PM

samsniss350z

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Wow, first time I've seen a code with so many numbers.

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06-05-2014, 04:47 PM

brutus27

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Hey OP here, took car to dealer, threw a P2A00 code. It turned out to be a cracked left front exhaust tube. Fixed under emissions warranty N/C. Subsequently passed California smog test.
Quick question, is this a common problem or was this an isolated incident? My car is completely stock w/ 50,000 miles DD. Never tracked, occasionally driven moderately hard and regularly maintained.

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