Conditions for Setting the DTC
WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
P2227
- Engine running
- The ECM detects that the difference between the actual BARO and the calculated BARO is greater than 15 kPa when distance since last estimated BARO update is at most 0.1 km (0.6 mi).
OR
- The ECM detects that the difference between the actual BARO and the calculated BARO is greater than 20 kPa when distance since last estimated BARO update is greater than 0.1 km (0.6 mi).
OR
- Ignition ON, engine OFF
- The ECM detects that the BARO pressure is less than 50 kPa (7.3 psi) or greater than 115 kPa (16.7 psi).
P2228
The ECM detects that the BARO sensor voltage is less than 2 V for greater than 5 s.
P2229
The ECM detects that the BARO sensor voltage is greater than 4.5 V for greater than 5 s.
P2230
The ECM detects that the cumulative difference between BARO sensor readings, over a specific length of time, is greater than a calibrated threshold.