The P0129 trouble code indicates that the barometric pressure is lower than the predetermined limit set by the manufacturer. This code typically points to issues related to the atmospheric pressure, which can affect the engine’s performance and fuel delivery.
Barometric Pressure Too Low
Code symptoms P0129.
1. Reduced engine performance.
2. Decreased fuel efficiency.
3. Malfunction indicator light (MIL) illumination.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0129.
1. Faulty barometric pressure sensor.
2. Issues with the intake manifold.
3. Problems with the Engine Control Module (ECM).
Code Solutions P0129.
1. Inspect and replace the barometric pressure sensor if it is faulty.
2. Check for any issues with the intake manifold and repair as needed.
3. If ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.