Hey everyone. Looking to troubleshoot an issue that's been occurring on my 2016 C7 Z06 (~16000 miles). It's on a stock tune (I double checked this before logging as well) and only has an intake or non-performance mods. Maintenance items are up to date (plugs, wires as well, oil, etc.)
Observed DTCs include:
U012A - Lost Communication with Chassis Control Module A
U042B - Invalid Data Received from Chassis Control Module A
U0100 - Lost Communication with ECM/PCM A
P0106 - Manifold Absolute Pressure/BARO Sensor Range/Performance (This has only been observed once in the last couple months, may be a fringe case)
P0300 - Random Misfire Detected (Permanent) (This has been occurring for a couple months. It's accompanied by a blinking check engine indicator for random misfires.)
Some things I've noticed include:
Consistent, steady speed at low RPM (1500-2500 RPM) causes a blinking check engine light semi-consistently (multiple times per drive).
MAP seems very, very high in certain places in the logs I'm attaching.
O2 sensors across both banks die at random intervals together, this seems to cause or be linked to the random misfires (P0300)
I'll upload my full logs here, if anyone wants additional logging done or if I can supply anything else, please let me know. I'm by no means an experienced tuner and haven't modified the vehicle tune-wise, only scanning was done, but I'm willing to try whatever to get this resolved. I'm curious if this is linked to a vacuum leak I can't find or some faulty electronics/sensors.
4-28-23 - p0300 currently.hpt
60-130s (caused freeze frame).hpl
Consistent low RPM cruising - Blinking MILs - Historical misfires.hpl
freeze frame 1 during 60-130.txt
FreezeFrame.png