Code Definition

P2229 — Barometric Air Pressure Sensor Circuit High

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Holden

About P2229

P2229 is a generic (obd-ii standard) powertrain diagnostic trouble code recorded for Holden vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P2229 is stored, the module has detected a signal or supply voltage higher than the expected operating range; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P2229 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The Engine Control Module (ECM) monitors the barometric air pressure (BAP) sensor signal to determine ambient air pressure for fuel, ignition timing, and engine load calculations, and on many engines this function is integrated into the MAP or MAF sensor. DTC P2229 is set when the ECM detects a BAP signal voltage higher than the calibrated maximum for the current operating conditions. This usually indicates a lost sensor ground, a short to the 5V reference, an open in the signal circuit pulling it high, or an internal sensor fault giving an implausibly high pressure reading. The fault can upse...

Join TaT to view the complete code information and diagnostic details.

Quick Facts