VW Golf R32 Forum banner
1 - 6 of 6 Posts

·
Registered
2007 5dr DSG RS R32
Joined
·
187 Posts
Discussion Starter · #1 ·
Anyone experienced these faults before? Any ideas what I should be looking at? Fuel trims are way out of spec.
Rectangle Font Screenshot Parallel Technology

Product Rectangle Font Material property Parallel
 

·
Registered
Joined
·
270 Posts
Check your exhaust flexies - it's common for them to leak and the exhaust can suck in air between pulses, upping the exhaust O2 content. the Sensors measure this air, and up the fuel trims to "compensate". When they don't see the difference they expect, they trigger the code.

It happens, because even when it enrichens the trims, the same amount of air leaks in and it's only measuring the O2 content, so even though the system is running rich, it sees it as lean from to much O2.
 

·
Registered
2007 5dr DSG RS R32
Joined
·
187 Posts
Discussion Starter · #5 ·
Anyone got any MAF readings I can compare too? Compared mine with another Mk5 R32 and mine reads lower across the RPM range. E.g. both at 4000rpm mines 10g/s lower!
 
1 - 6 of 6 Posts
Top