DTC P2227, DTC P2228 & P2229: Condition

DTC P2227 is set when barometric pressure calculated using Manifold Absolute Pressure (MAP) sensor does not match barometric pressure sensor output voltage. P2228 is set when ECM detects barometric pressure sensor output voltage is less than 0.1 volts for 19 seconds. P2229 is set when ECM detects barometric pressure sensor output voltage is more than 5.1 volts for 19 seconds. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles. Possible causes are:

• Barometric pressure sensor malfunction.
• MAP sensor malfunction.