Just got my hc ls1 tuned Code P0121

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Oct 15, 2012 | 09:21 PM

flattusmaximus78

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Just got my hc ls1 tuned Code P0121

5.3 heads, lunati nitrous cam, and a built motor. Street tuned with hp tuners.

Car is a 2002 a4 z28. Car runs awesome for the most part. The SES light comes up randomly.

Is this something to look into or is this a dumby code? Car runs great, my wide band is broken so I don't wanna go crazy if it would have any affect on my afr's or timing because the engine is new.

P0121
TPS/Pedal position sensor a ckt range/perf.

The above is the full code. Thanks guys!

Oct 15, 2012 | 09:27 PM

Slowhawk

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I've seen it a few times. Can be deleted if you first verify the tps is good.

Oct 15, 2012 | 09:33 PM

flattusmaximus78

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Quote:

Originally Posted by Slowhawk

I've seen it a few times. Can be deleted if you first verify the tps is good.

Well that sounds good at least. I deleted the code for the mean time. I will check this weekend if it appears.

Oct 17, 2012 | 05:41 PM

flattusmaximus78

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Code came on again today. I noticed it wanted to surge after wot with the code on. Car drives like stock otherwise so this surprised me.

Nov 19, 2012 | 03:35 PM

flattusmaximus78

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Well the check engine light came on again. This time when it pops on the car gets really rich. 12.2 area on my wideband. If I turn the car off then back on it's fine. I also noticed my shift points are above 6500, now the car shifts at 5500 and the car never wants to downshift at all.