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Stephen Rothwell
Stephen Rothwell,
Category: Vauxhall
Satisfied Customers: 509
Experience:  Director at Steve Rothwell Limited
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I have a Vauxhall asta h 07 I have sp2 on the dash it has a

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I have a Vauxhall asta h 07 I have sp2 on the dash it has a code p1666 is showing I'm trying to find out what is wrong with the car
JA: Do you have a scan tool to read the codes?
Customer: no, I don't
JA: What is the model of your '07 Vauxhall?
Customer: its an h model
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: I haven't tried any think as yet
JA: Anything else you want the Mechanic to know before I connect you?
Customer: no just to find the fault what it means


Thank you for your question, my name is Steve and I am a fully qualified vehicle technician with over thirty years in the trade, hopefully I can help.

The code P1666 indicates Heated oxygen sensor (HO2S) 1, bank 1 - malfunction. This is the 02 sensor in the manfold. It is quite a common problems but worth checking the connection first.

I hope this answers your question but do please feel free to ask any further details by replying to this thread.

If this does answer your question please click accept and rate me, this allows me to continue, even

after clicking accept I can answer further details by replying to this thread.

Many Thanks


Customer: replied 10 days ago.
thankyou for help now I know I will get it to a garage thankyou

That's ok. Do let me know if you need any more info.


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