P0129

Barometric Pressure Too Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

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

P0107 P0108 P2228 P2229