P2226Fuel & Air Metering

Barometric Pressure Circuit

P2226 means the ECM detected a general fault in the barometric (BARO) pressure sensor circuit. The BARO sensor helps the ECM adjust for altitude, and a fault can affect fuel trims.

🚗 Yes, but drivability may be slightly affected.

LOW

severity

🎯 Top Causes, Ranked by Likelihood

#1Faulty BARO or MAP sensor$50-$250

45%

The sensor element fails or reads incorrectly.

#2Wiring or connector fault$50-$250

30%

Corroded or damaged sensor connector.

#3Vacuum or intake leak$50-$300

15%

A leak skews pressure-based readings.

#4ECM fault$300-$1000

10%

Rarely, the module misreads the signal.

🩺 Common Symptoms

Check engine light
Slightly rough running
Minor fuel economy change
Hard starting at altitude

💰 Repair Cost: DIY vs Shop

DIY Cost

$50-$250

Shop Cost

$150-$400

📋 Free OBD2 Code Cheat Sheet

The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.

🔧 How to Diagnose P2226

1Inspect the BARO or MAP sensor connector

2Check sensor readings in live data

3Look for intake or vacuum leaks

4Replace the sensor if out of spec

❓ Frequently Asked Questions

Can I drive with P2226?

Yes, but fix it soon since fuel trims and altitude compensation may be off.

How much to fix P2226?

Usually $150-$400 at a shop; DIY sensor is $50-$250.

What causes P2226 most often?

A faulty barometric or MAP sensor, or wiring problems.

🔗 Related Codes

P2227P2228P2229P0105P0107