Powertrain
generic / SAE
P2228
Barometric Pressure Sensor Circuit Low
The barometric (ambient) pressure sensor reports a voltage below the valid window. The ECU uses this signal to compensate fuel and boost calculations for altitude — a stuck-low value tricks the ECU into thinking the car is at high altitude.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number2 / 28
Possible causes
- Barometric pressure sensor failed high
- Signal shorted to ground medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 40–250 €
- Estimated time: 0.3–1 h
- Component: barometric pressure sensor
- Component: bps wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012