P0129
Barometric Pressure Too Low
P0129 is an OBD-II diagnostic trouble code meaning: Barometric Pressure Too Low. Common causes: barometric pressure sensor malfunction, open or short circuit in the sensor wiring harness. Estimated repair cost: $56–167.
Symptoms
- Reduced engine power
- Increased fuel consumption
- Unstable idling
- Difficulty starting the engine
Causes
- Barometric pressure sensor malfunction
- Open or short circuit in the sensor wiring harness
- Problems with sensor connector contacts
- ECU malfunction
How to Fix
- Check the barometric pressure sensor readings using a diagnostic scanner
- Inspect the sensor wiring harness and connectors for damage.
- If necessary, replace the BARO or MAP sensor
- Check and update the ECU firmware (if required)
Related codes
Error P0129 by Vehicle Brand
FAQ
What does the P0129 code mean?
P0129 is an OBD-II diagnostic trouble code that indicates: Barometric Pressure Too Low
What causes a P0129 error code?
The most common causes of P0129 include: Barometric pressure sensor malfunction; Open or short circuit in the sensor wiring harness; Problems with sensor connector contacts; ECU malfunction.
How do I fix a P0129 diagnostic trouble code?
To fix P0129: Check the barometric pressure sensor readings using a diagnostic scanner. Inspect the sensor wiring harness and connectors for damage.. If necessary, replace the BARO or MAP sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0129?
Limited driving only, diagnose soon
How much does it cost to fix P0129?
The estimated repair cost for P0129 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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