2013 Octavia vRS 184 TDI (CUPA) - P0101 & P0402

Hi all,

Looking for a bit of advice on this one.

My car is a 2013 Octavia vRS 2.0 TDI 184 (CUPA) with about 277,000 km.

I'm getting an intermittent P0101 (MAF range/performance) and every now and then, but much less frequent, a P0402 (EGR excessive flow). The P0101 always seems to come back first, but the P0402 is much less frequent.

The car still drives OK, no limp mode, but it definitely doesn't feel 100%, a little sluggish to accelerate,it actually seems to drive better with the MAF unplugged.

I've got VCDS so I've been trying to work through it rather than just throwing parts at it.

So far:

• No obvious splits or loose boost/intake hoses.

• MAF at idle is around 8.2 g/s.

• Once cleared, faults don't return immediatly, requires some driving.

• Starts fine and idles ok, a little rough maybe.

I'm wondering if the 2 faults are connected. If the EGR is stuck open or not closing properly, could that be enough to upset the MAF readings and trigger the P0101?

What should I look at next, remove MAP or EGR for cleaning?