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Boxstard · 09-12-2017, 05:34 PM

I'd start with cleaning MAF sensor element, then replace it if the same codes keep coming back. More odds on a bad MAF as it could affect fuel/ air mixture that throws the codes for both banks, less odds on both sides of O2 sensors gone bad at the same time.

I went through the same issue last year at 69K miles, ended up with a new MAF and 4 new O2 sensors replacing no-brand sensors badly spliced.

09-12-2017, 05:34 PM	#5
Boxstard Registered User Join Date: Apr 2016 Location: SE Michigan Posts: 497	I'd start with cleaning MAF sensor element, then replace it if the same codes keep coming back. More odds on a bad MAF as it could affect fuel/ air mixture that throws the codes for both banks, less odds on both sides of O2 sensors gone bad at the same time. I went through the same issue last year at 69K miles, ended up with a new MAF and 4 new O2 sensors replacing no-brand sensors badly spliced. __________________ 1997 Boxster arctic silver/ red, XNE riveted mahogany/ leather steering wheel & 917-style wood shift knob, Ben’s short shifter, PSE, 996 TB, UDP, stereo/ center console delete, hardtop and speedster humps, daily driver rain or shine or snow!