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VCDS (aka Vagcom) For all your electronic debug / diag advice queries and mods. |
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Lambda sensor fault is not critical, it's just for the heater so it will take longer for lambda to start working on cold starts say 2 minutes instead of 20 secs.
The first to look at is cylinder 1 misfire and it can be causing multiple cylinder misfires. Check spark plug, ignition coil, injector and wiring for cylinder 1.
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure |
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