Conditions for Setting the DTC

P2227

• The engine is running.
• The ECM detects that the difference between the BARO signal and the calculated BARO is greater than 15 kPa (2.2 psi) if the vehicle has traveled at most 0.5 km (0.31 mi) since the last calculated BARO update, or the ECM detects that the difference between the BARO signal and the calculated BARO is greater than 25 kPa (3.6 psi) if the vehicle has traveled greater than 0.5 km (0.31 mi) since the last calculated BARO update.

  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 1.95 V for greater than 4 s.

P2229 

The ECM detects that the BARO sensor voltage is greater than 4.5 V for greater than 4 s.

P2230 

The ECM detects that the difference between the current BARO sensor reading and the previous BARO sensor reading is greater than 10 kPa (1.5 psi).