You don't mention whether you have a gas or diesel engine, this affects where the BARO sensor is located. Regardless of location this code can occur when moisture freezes on/in the BARO sensor.
Beyond that, you're going to need why the code set, which direction is was out of spec, what the voltages/pressures/conditions were when it failed it's diagnostics to go farther.
On gas engine engine you COULD be looking at a failed "MAF" sensor, or it's wiring, on the diesel it's integrated into the ECM. Either way diag is required if the condition persists
Beyond that, you're going to need why the code set, which direction is was out of spec, what the voltages/pressures/conditions were when it failed it's diagnostics to go farther.
On gas engine engine you COULD be looking at a failed "MAF" sensor, or it's wiring, on the diesel it's integrated into the ECM. Either way diag is required if the condition persists
