2017 Volkswagen Beetle Convertible OBD2 Code P2A04 O2 Sensor Circuit Range/Performance

OBD II Fault Code

• OBD II P2A04

OBD-II Code Decreased engine performance is defined as a O2 Sensor Circuit Range/Performance

The purpose of the oxygen sensor is to measure the oxygen content in the exhaust gases after they leave the combustion process of the engine. This information is critical to the PCM's ability to maintain efficient fuel economy. When the PCM detects a failure of the sensor or the information received from the sensor, it will set code P2A04.

Decreased engine performance Symptoms

• Decreased engine performance
• Increased fuel consumption

Common Problems That Trigger the P2A04 Code

• Exhaust leak
• Oxygen sensor failure
• Powertrain Control Module (PCM) failure
• Wiring issue

Common Repairs Needed for the P2A04 Code

• Oxygen Sensor Replacement