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Author Topic: No DTC's but Readiness fails???  (Read 1177 times)

Offline Rav2011

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No DTC's but Readiness fails???
« on: July 21, 2012, 11:22:37 pm »
Hi Guys,

I recently cleared all DTC's on my car and reset the readiness via VCDS.
However, the readiness appears to have failed again on exhaust emissions,
Catylitic convertor and oxygen sensors.

How is this possible with no DTC's????
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Offline bacillus

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Re: No DTC's but Readiness fails???
« Reply #1 on: July 22, 2012, 09:31:39 am »
afaik if you just cleared your DTCs then you will fail the readiness test.
Drive the car for 100 miles and try it again.
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Offline Rav2011

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Re: No DTC's but Readiness fails???
« Reply #2 on: July 22, 2012, 11:15:37 am »
Yes, but the readiness tests did pass after I cleared the DTC's.
After driving the car for approximately 150 miles the readiness is marked as failed for some components and no DTC's. I have not yet tried to reset the readiness again as I was wondering what would cause this?
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Offline Rav2011

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Re: No DTC's but Readiness fails???
« Reply #3 on: July 22, 2012, 08:12:02 pm »
VCDS today shows another DTC - great!!

Logged another thread for this.

Thanks for the replies
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