DTC Advanced Diagnostics: P2228
DTC P2228:Barometric Pressure (BARO) Sensor Circuit Low Voltage

General Description
The barometric pressure (BARO) sensor is built into the powertrain control module (PCM), and it monitors atmospheric pressure. The PCM monitors the BARO sensor for electrical faults. If a short to ground is detected, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type
Execution
Continuous
Sequence
None
Duration
0.5 second or more
DTC Type
One drive cycle, MIL on

Enable Conditions
Condition
Minimum
Maximum
Elapsed time after starting the engine
0.5 second
–

Malfunction Threshold
The PCM detects a short to ground or information received from the BARO sensor is abnormal for at least 0.5 second.

Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
PCM internal circuit failure (BARO sensor circuit short to ground)

Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.

Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command.