#3 · Nov 5, 2017 I've just agreed to purchase a 63 plate Astra 1.7CDTi 109 and when I was out on the test drive I noticed a code 55 error code on the dash, and the regen light was on. At the time I thought the light meant that the washer fluid was empty! HnEKA. Code 55 on a 2009 Opel insignia , pdf is blocked , car needs to be regenerated to fix the fault , check oil quality before regen and replace the oil and oil Vauxhall Code 55 - YouTube. How to clear error 55 on a Vauxhall / Opel without going to the garage. Running the engine on a run of around 45 minutes clears mine in 5th gear at 2,500

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