P2228

P2228-BAROMETRIC PRESSURE CIRCUIT LOW

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The barometric pressure measures atmospheric pressure. The sensor is part of the Powertrain Control Module (PCM) and is not replaceable separately.

- When Monitored:
Any time the PCM is powered up.

- Set Condition:
The PCM detects the baro pressure signal is too low.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.

Diagnostic Test
ACTIVE DTC
1. Turn the ignition on.
2. Using a scan tool, read Active DTCs.

Is the DTC active at this time?

Yes

- Replace and program the Powertrain Control Module. .
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Perform the INTERMITTENT CONDITION diagnostic procedure. Intermittent Condition Test.