Jul 16, 2022 · It is difficult to decipher, but I think both codes are related to the Cylinder Deactivation Exhaust Control Valves. Those two codes both lead ...

Sep 15, 2015 · I've personally tested this on my own 2014 Vette by completely unplugging one of the AFM valves, which then threw P12F4 and P12F8 from the CCM ...

DTC P12E3 Cylinder Deactivation Exhaust Flow Valve Control Circuit Open DTC P12E7 Cylinder Deactivation Exhaust Flow Valve Feedback Circuit Low Duty Cycle ...

Jul 4, 2016 · Visiting my mechanic at a a garage near me, his computer was able to read the codes but not to erase them. The translation of both error codes, ...

Jan 24, 2016 · The cylinder deactivation exhaust flow control valves are disabled for the remainder of the ignition cycle. ... DTCs P12E3, P12E7, P12E8, P12E9, ...

Nov 16, 2017 · P12F4 P12F9 Looks like I also have a pending code of P0157 thats related to an O2 sensor. After some research it appears all the P codes are ...

What Does the P12F4 Chevrolet Code Mean? The cylinder deactivation exhaust flow control system consists of valves installed at the inlet of the muffler.

P12F4 code needs proper lubrication of your transmission's moving parts, it's important to always drive with the right amount of clean fluid. It's good practice ...

Code P12F4 Description. The cylinder deactivation exhaust flow control system consists of valves installed at the inlet of the muffler.