156 facelift trip computer incorrect reading - Alfa Romeo Forum
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Location: United Kingdom
County: Leicestershire
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156 facelift trip computer incorrect reading

My on board computer gives inaccurate mpg readings. It says I'm getting 25mpg when it should be more. I've now realised that the trip reading is also way out. When I've reset it it only records about half the miles travelled compared with the trip meter in the speedo. I think this might be affecting the mpg reading. My question is where does the OBC get it's distance travelled information from? If I can sort this then the other readings might be more accurate.
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156 , computer , facelift , incorrect , reading , trip

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