What Causes Volkswagen Sensor Failures?
1 Answers
Volkswagen sensor failures are primarily caused by issues with oxygen sensors and wheel speed sensors. Oxygen Sensor: Located on the exhaust pipe, a faulty oxygen sensor prevents the ECU from accurately determining the correct fuel injection amount. This results in either an overly rich or lean air-fuel mixture, incomplete combustion, reduced engine power, and increased emissions. Wheel Speed Sensor: Typically installed on each wheel hub. If faulty, the ABS system will fail. Air flow meter - usually installed between the air filter and throttle body. If faulty, the engine cannot achieve proper RPM. Coolant temperature sensor - normally located near the thermostat. If faulty, the engine will experience cold start difficulties, unstable idle operation, and insufficient power during acceleration.