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My first CEL light P1146 / P1147


ph 7

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Received this error code a couple of days ago, searched on reading the errors and found the guide here really easy to follow. Should I be concerned other than just following the reset guide and seeing if it comes back or are there steps I should take now?

 

I gather from searching and reading that it is the heated O2 sensor for both error codes.

 

Now my car has a powerflow exhaust on it so is it an upshot of that? I have left the light on currently.

 

I've just filled the car so will be watching to see if my fuel economy goes down significantly.

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As far as i'm aware, the powerflow is only cat back...the invoice that I have for it doesn't spell out exactly what parts were changed/installed but I'm pretty sure that the cats are stock. The exhaust was already install when I bought it.

 

The only thing of note is that i was in 6th gear and my speed had dropped from 60 down to 30(just off throttle deceleration as there was stationary traffic in the distance I'd spotted) . I'd forgotten to change down and so as the traffic cleared i started to accelerate again and the the engine laboured for a few seconds before I spotted it and changed down...the light came on shortly after this...could be complete coincidence or did I upset the sensor? Only other details I can think of are that the engine was up to temperature and that I had just brimmed the tank (tesco 99).

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mines done it since fitted the HFC s.......i ve fitted the sensor spacers as well but if i drive it for a period of time in traffic it comes back on.i turned it off before japfest and it dont come back whilst on track but 3 weeks later on the commute to work it came on.

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