Barometric Pressure Too Low

What This Means

The barometric pressure reading is lower than expected for the current altitude and conditions. This affects fuel and timing calculations for altitude compensation.

Common Symptoms

• Check engine light on
• Minor performance changes
• Fuel economy variation
• No major driveability issue

Common Causes

• Faulty barometric pressure sensor
• MAP sensor fault
• Wiring issue
• PCM calibration error
• Altitude compensation failure

Estimated Repair Cost