OBD-II code · Powertrain (generic)
P0129 Barometric Pressure Too Low
Barometric pressure reading below the plausible minimum. Either operating at extreme altitude or sensor fault.
Is it safe to drive with P0129?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor reading drifted low
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Barometric Pressure Sensor
Related codes
- P0126Insufficient Coolant Temperature for Stable Operation
- P0127Intake Air Temperature Too High
- P0128Coolant Thermostat Below Regulating Temperature
- P012ATurbocharger/Supercharger Inlet Pressure Sensor A Circuit
- P012BTurbocharger/Supercharger Inlet Pressure Sensor A Circuit Range/Performance
- P012CTurbocharger/Supercharger Inlet Pressure Sensor A Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.