Car thud then looses power, engine light on

Asked by skyndiver May 27, 2013 at 05:26 PM about the 2007 Chevrolet Optra

Question type: Maintenance & Repair

Twice in the past month I changed gears from drive or park to reverse and the car thuds,
engine light comes on and car looses acceleration power. After shutting the car off and
back on acceleration is back to normal. After a day or two engine light goes off.
Diagnostics was run and rec'd P0496, P0700 and B20D9 codes. I found the first 2 codes
but can't find what the last code means. Please `help

3 Answers
48,915

kbro answered 11 years ago

I cannot find it are you sure that is the right code?

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skyndiver answered 11 years ago

yes.. apparently its for the dealer only. the tech i was talking to said they couldnt see a description at all either

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30

cdherman answered 11 years ago

The exact same thing happened to me. The solution was $400 transmission range switch, however I have only had it back for 3 days. It seems alright but I had different codes.

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