P0129 OBD-II: Barometric Pressure Too Low
P0129 Severity
Will P0129 go away on its own?
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
What causes OBD-II fault code P0129?
The engine control module (PCM) uses a Pressure sensor in the intake to determine airflow through the engine. If the PCM detects the signal is too low, it will set code P0129.
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What Does P0129 Code Mean?
OBD-II Code P0129 is defined as a Barometric Pressure Too Low
The engine control module (PCM) uses a Pressure sensor in the intake to determine airflow through the engine. If the PCM detects the signal is too low, it will set code P0129.
P0129 Symptoms
- Decreased engine performance
- Increased fuel consumption
Common Problems That Trigger the P0129 Code
- Internal engine failure
- Mass Air Flow (MAF) sensor failure
- The engine is not timing correctly
- Vacuum leak
- Wiring issue
Common Repairs Needed for the P0129 Code
Ask our experts about P0129.
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