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2015 Range Rover L405 Supercharged & 2006-2009 Range Rover MkIII / L322
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26 Posts
Discussion Starter #1
Recently I've been doing routine maintenance and replaced the fuel injectors. Now i have cel p0172 & p0175 codes. Before replacing the injectors I was getting p0420 catyaltic converter code. That code has went away with the fuel injector change. Any ideas what the problem could be?
 

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What year and engine? We need to know the basics before we even get started.

0172 & 0175 usually mean the MAF needs to be cleaned. Actual injectors would have nothing to do with it as the ECU meters fuel flow based on sensors.
 

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2015 Range Rover L405 Supercharged & 2006-2009 Range Rover MkIII / L322
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26 Posts
Discussion Starter #3
2006 range rover hse 4.4 jag engine.
 

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Had the same issue about 3 months ago replaced the MAF and the service advisor reset the adaptations to the car had no problems since
 

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Doctor Who do you have the same model as ours is producing those codes also with a P0128 (not coming up to temp fast enough code). I cleaned the maf but lite just came on and this time its the p1175 only so far. (lambda signal weak).
 
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