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17439 (P1031) - Intake Manifold Tuning Valve (N316): Setpoint Not Reached
17443 (P1035) - Sensor for Nox (G295): Signal Implausible
16556 (P0172) - System Too Rich, Bank 1

16804 (P0420) - Catalyst System; Bank 1: Efficiency Below Threshold

On the "screwed" index of 1 to 10, about 9, maybe 9.5... That should be an AXW code engine and it is the rarest of Golf 5's, making the R32 look positively common; I think I have worked on two. Due to this used parts are going to be very difficult to find. Even being a four cylinder they have four lambda sensors and a NOX (various oxides of Nitrogen) sensor and it looks like the two pre cat Lambda sensors and the NOX sensor are faulty, I doubt it will pass an MOT. The Lambda sensors are available aftermarket, only use Bosch, but the NOX sensor 06F 907 807 F is not available aftermarket and costs £784.67 from VW UK but it has gone obsolete and is now only available from VW Classic in Germany for €825.86 plus shipping.
 
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