Is your Audi’s check engine light illuminated? Don’t panic! Your car is equipped with an On-Board Diagnostic (OBD) system, specifically OBD-II, designed to help pinpoint issues. This system generates diagnostic trouble codes (DTCs), often referred to as “Audi OBD2 codes,” that provide clues about potential problems. Understanding these codes can empower you to address your car’s needs effectively. This comprehensive Audi Obd2 Codes List will guide you through common codes and their potential meanings.
Common Audi OBD2 Codes and Their Meanings
The following table lists common Audi OBD2 codes, along with their potential causes. Remember, this list isn’t exhaustive, and a proper diagnosis should always be performed by a qualified technician using professional diagnostic equipment.
| Code | Potential Problems |
|---|---|
| P0010 | Powertrain Control Module (PCM) failure, Variable valve timing actuator issues, Wiring problems |
| P0011 | Camshaft variable timing solenoid failure, Low engine oil, Incorrect engine timing, Incorrect engine oil viscosity, Variable valve timing actuator issues, Worn timing chain |
| P0012 | Similar to P0011: Camshaft timing issues |
| P0013 | Similar to P0010: PCM or variable valve timing issues |
| P0014 | Similar to P0011: Camshaft timing issues |
| P0101 | Vacuum leaks, Issues with intake air boot or PCV hose, Defective intake manifold gaskets, Mass Airflow Sensor (MAF) problems |
| P0102 | MAF sensor unplugged or damaged wiring, Loose or corroded MAF sensor circuit terminals, Faulty MAF sensor |
| P0113 | Defective or dirty Intake Air Temperature sensor, Faulty MAF sensor, Wiring issues |
| P0128 | Thermostat issues, Coolant temperature sensor problems, Low coolant, Cooling system issues |
| P0135 | Oxygen sensor issues, Exhaust leaks, Intake air leaks, Low fuel pressure, Sensor wiring problems |
| P0171 | Software update needed, Vacuum leaks, MAF sensor issues, Fuel filter or pump problems, Dirty fuel injectors |
| P0174 | Similar to P0171: Fuel or air intake issues |
| P0200 | General fuel injector malfunction |
| P0201 | Fuel injector 1 malfunction |
| P0202 | Fuel injector 2 malfunction |
| P0203 | Fuel injector 3 malfunction |
| P0205 | Fuel injector 4 malfunction |
| P0300 | Random/Multiple Cylinder Misfire Detected |
| P0301 | Cylinder 1 Misfire Detected |
| P0302 | Cylinder 2 Misfire Detected |
| P0303 | Cylinder 3 Misfire Detected |
| P0304 | Cylinder 4 Misfire Detected |
| P0401 | Insufficient EGR Flow |
| P0420 | Catalyst System Efficiency Below Threshold (Bank 1) |
| P0430 | Catalyst System Efficiency Below Threshold (Bank 2) |
| P0440 | Evaporative Emission Control System Malfunction |
| P0441 | Incorrect Purge Flow |
| P0442 | Evaporative Emission Control System Leak Detected (Small Leak) |
| P0455 | Evaporative Emission Control System Leak Detected (Gross Leak) |
| … | … |
(This table is not complete due to the length of the original. It includes a representative sample of codes.)
Decoding Audi-Specific OBD2 Codes
While many OBD2 codes are generic, some, especially those starting with “P1,” are manufacturer-specific. These codes provide more detailed information related to Audi systems. Consulting a professional equipped with Audi-specific diagnostic tools is crucial for accurately interpreting these codes.
Beyond the Audi OBD2 Codes List: Seeking Professional Help
This audi obd2 codes list offers a starting point for understanding your car’s diagnostic system. However, it’s essential to remember that codes are just indicators. A thorough diagnosis involves analyzing various factors, including freeze frame data, live sensor readings, and performing visual inspections.
Contacting a qualified Audi technician is always the recommended course of action when your check engine light comes on. They possess the expertise and specialized equipment necessary to accurately diagnose and resolve the underlying issue, ensuring your Audi performs optimally and safely.
