Conditions for Setting the DTC

P2227

• The ECM detects that the BARO pressure changed greater than 5 kPa within 20 seconds.

  OR

• The ECM detects that the BARO pressure changed greater than 30 kPa since the last ignition cycle.
• Any of the condition above exist for 4 seconds or for a cumulative of 50 seconds.

P2228

• The ECM detects that the BARO sensor voltage is less than 0.2 volts and the BARO pressure is less than 50 kPa.
• The conditions are met for greater than 4 seconds or for a cumulative of 50 seconds.

P2229

• The ECM detects that the BARO sensor voltage is greater than 4.8 volts and the BARO pressure is greater than 115 kPa.
• The conditions are met for greater than 4 seconds or for a cumulative of 50 seconds.