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Old 03-18-2009, 07:27 AM   #1
rccook16
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Default Codes: P2176, 0121, 0221, 2135

Are all these error codes for the throttlebody? Any suggestions on were to start? Thsi is on my daughters 03 Vue with 3.0 motor. Was going to tackle this while visiting her but not sure now. Any info would be appreciated.

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Old 03-18-2009, 08:55 AM   #2
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2003 L-Series 3.0L Sedan
Default Re: Codes: P2176, 0121, 0221, 2135

DTC P0121 TP Sensor Circuit Insufficient Activity

DTC P0221 APP Sensor 2 Circuit Performance

P2135 - Throttle Position (TP) Sensor 1-2 Correlation

P2176 - Minimum Throttle Position Not Learned

P2135 & P2176 came from another forum (we need an updated OBD II list) and may not be correct but I threw it in here as possible comparison to the 1st two DTC'S.

What's the car doing?

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Old 03-18-2009, 10:49 AM   #3
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2005 VUE 3.5L
2007 VUE 3.5L
Default Re: Codes: P2176, 0121, 0221, 2135

fdryer asked the pertinent question ...

You might want to search this forum for other TAC (throttle actuator control) posts. Seems like several folks have had problems with corrosion at or near the throttle body assembly.

I've attached an extract from service manual with description of the Saturn TAC system. My apologies in advance if you are already a throttle-by-wire expert.
Attached Files
File Type: pdf 03 Vue 3.0 TAC.pdf (34.2 KB, 319 views)

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Old 03-18-2009, 11:23 AM   #4
Ltech20
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Default Re: Codes: P2176, 0121, 0221, 2135

Replace the throttle body. If trouble persists replace app sensor. 99% chance its the throttle body.

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Old 03-19-2009, 09:28 PM   #5
rccook16
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Default Re: Codes: P2176, 0121, 0221, 2135

Thanks for the info. This has been a problem for some time on my daughter's car. Service lite on, codes shown but no drivability probs. Last year I cleaned throttlebody and car was fine. Now she has had lite on, sudden acceleration or something. She is in NC and I'm in MI so getting the real story may be a challenge. I'll get a good description of exactly what occured.

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Old 06-10-2016, 04:09 PM   #6
Benny6565
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2002 VUE 2.2L
Dizzy Re: Codes: P2176, 0121, 0221, 2135

Quote:
Originally Posted by Ltech20 View Post
Replace the throttle body. If trouble persists replace app sensor. 99% chance its the throttle body.
Thank you, for the post...Im replacing the throttle body on my 2002 vue 2.2l .. I replaced everything else, lol

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Old 03-20-2018, 09:34 PM   #7
m1super90
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2003 VUE 3.0L
Default Re: Codes: P2176, 0121, 0221, 2135

Tonight my 2003 Vue 3.0 almost couldn't make it home. Wrench code, check engine light, occasional reduce power light. Many stalls, many irritated drivers behind me, but it made it home.

I had these TPS codes:
P0121
P0123
P0221
P0222
P2119
P2135
P2176

and transmission code: P0700

I suspected the TB connector because I'd recently change the plugs and that had to come off, and, I'd had one instance of a "not learned" code since. Removed the plug, sprayed both sides hard with WD-40, reattached, and she runs like a charm again.

Just passing alone my experience. Check this form first!

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