Land Rover Repair/p0172 p0175

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Question
ive benen having the codes p0172 and p0175 on my 8000 km range rover sport 2012 for the 4th time, theyre failing to fix the problem, my exhaust tips are black from the black smoke that comes out of them, they checked my air filters and mass airflow sensors, they changed the canister purge valve, they updated the engine ECU software, they reprogrammed the engine computer, they performed a PCM module adaptation clear and again my check engine light is on again, my car has spent time at the dealership morr than with me, what do you think is going on. is this a defect ?

Answer
Exhaust tips are normally black on the inside on these trucks.   As for a defect . . . I suggest you call Land Rover customer service at the phone number listed in your owner's book and express your concerns to them,  They can work with your dealer to get the problem resolved so you are happy.

Sometimes problems like this need factory support to solve; sometimes the dealers have not got adequate training or experience  . . . if they can't help you should turn to the manufacturer.

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John Elder Robison

Expertise

I own J E Robison Service in Springfield, MA. We are Bosch Car Service for Land Rover, BMW, Mercedes, and other European lines. I can answer most questions about Land Rover service or repair. I'm known as a car enthusiast, machine aficianado, photographer, writer, and speaker. I've been around Land Rovers and British cars most of my life. Visit me at my car business, www.robisonservice.com or my author website, www.johnrobison.com. Check out my autism and writing blog at jerobison.blogspot.com or my photos on www.pbase.com/robisonphoto John Elder Robison

Experience

I have been a Land Rover service manager since Land Rover returned to North America in 1987. My company is a four-star Bosch Car Service facility, known nationwide for Land Rover service, overhaul, customization, and restoration. In addition to Land Rover our company services BMW, Jaguar, Mercedes-Benz, Rolls_Royce, and Bentley motorcars. We have factory-plus-level service capability for all makes. Visit my company online at www.robisonservice.com > service > land rover Also visit my blog at robisonservice.blogspot.com

Organizations
ASA IATN NPPA PPA

Publications
In the Land Rover world, my writing can be found in various print magazines and online at robisonservice.blogspot,com. In the wider publishing world, my work is published by 20 publishers in over 50 countries. Mt books Look Me in the Eye, Be Different and Raising Cubby have made US and international bestseller lists.

Education/Credentials
I am ASE certified, Bosch Trained, and trained by Omnitec/T4 and Autologic on their Land Rover test systems.

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