It seems like you're dealing with multiple trouble codes on your 2013 Traverse, and these codes can help diagnose the issues with your vehicle. Here's a breakdown of each code and its potential meaning:
P2228 - Barometric Pressure Sensor Circuit Low Voltage: This code indicates that there's a low voltage condition in the circuit related to the barometric pressure sensor. The sensor measures atmospheric pressure and helps the engine control module (ECM) adjust fuel and ignition timing.
P228C - Fuel Pressure Regulator Control Performance: This code suggests that there might be an issue with the fuel pressure regulator or its control circuit. The fuel pressure regulator controls the fuel pressure in the fuel rail, which is crucial for proper engine performance.
P013 - Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 3): This code points to a slow response from the oxygen sensor in bank 1, sensor 3. Oxygen sensors help monitor the exhaust gases and provide feedback to the ECM for adjusting fuel mixture.
P0171 - System Too Lean (Bank 1): This code indicates that the engine is running too lean on bank 1. It suggests there's an imbalance between the amount of air and fuel being delivered to the engine, potentially causing rough running.
P0089 - Fuel Pressure Regulator Performance: This code relates to the performance of the fuel pressure regulator. It's likely tied to the same issue as code P228C and could be due to issues with fuel pressure regulation.
With these codes in mind, there seems to be a common thread pointing toward fuel pressure regulation issues. It's possible that a faulty fuel pressure regulator, a wiring problem, or a vacuum leak is affecting the air-fuel mixture and causing the rough running condition.
Here are some steps you can take:
Check for Vacuum Leaks: Inspect the vacuum lines for any leaks or cracks. A vacuum leak can disrupt the air intake and cause a lean condition, leading to rough running.
Inspect Wiring and Connectors: Check the wiring and connectors related to the barometric pressure sensor, fuel pressure regulator, and oxygen sensors. Damaged or loose connections can lead to communication errors and sensor malfunctions.
Test Fuel Pressure: Use a fuel pressure gauge to measure the actual fuel pressure at the fuel rail. Compare it to the manufacturer's specifications. If the pressure is outside the acceptable range, it could be causing the issues.
Check Oxygen Sensors: While code P013 relates to a slow response from an oxygen sensor, it's worth ensuring all oxygen sensors are working correctly. A malfunctioning oxygen sensor can affect fuel mixture adjustments.
If you're not comfortable diagnosing and repairing the issue yourself, it's recommended to take your Traverse to a qualified mechanic or dealership. They can use advanced diagnostics tools and their expertise to pinpoint the exact problem.
