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Old 11-07-2017, 04:24 PM
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TC light
Need help. 2006 hhr 2.4. TC light come on at idle if I keep the rpm up when it idles. Light pops on then engine light come on po171 is the code any help .243000 miles
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Old 11-07-2017, 04:29 PM
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Read:
www.obd-codes.com/p0171

And this:
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Old 11-07-2017, 04:58 PM
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However; vacuum leaks are a frequent culprit. If you are hearing a new noise under the hood, could be a broken flex pipe.

The traction control will turn off any time there is a "performance" related fault.
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Old 11-07-2017, 05:44 PM
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I’d look at the flexpipe
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