Volkswagen Eos: Flashing Check Engine Light Diagnosis

A flashing check engine light is your Volkswagen Eos’s way of saying “I have a serious problem, don’t ignore me”. Most of the time, that serious problem is a misfire.  This flashing light should not be ignored.  When your engine is misfiring, it is dumping raw fuel into the exhaust.  This raw fuel can detonate, … Read moreVolkswagen Eos: Flashing Check Engine Light Diagnosis

Volkswagen Eos P0405:  EGR Sensor “A” → Circuit Low

  P0405 is a generic OBDII trouble code.  It deals with the signal coming from the EGR system.  Since it is a generic code, it has the same meaning for the Volkswagen Eos as it would any other vehicle.   The EGR system allows a certain amount of the Eos’s exhaust to re-enter the combustion chamber, … Read moreVolkswagen Eos P0405:  EGR Sensor “A” → Circuit Low

Volkswagen Eos: Warm Up Catalyst Efficiency → Below Threshold (Bank2)

P0431 is a standard OBDII trouble code, which means that it has the same meaning for the Volkswagen Eos as it would any other vehicle.  It is closely related to P0430 (which is one of the most popular OBDII codes). Warm Up Catalyst Efficiency → Below Threshold (Bank 2) When it’s the only trouble code … Read moreVolkswagen Eos: Warm Up Catalyst Efficiency → Below Threshold (Bank2)

Volkswagen Eos: Warm Up Catalyst Efficiency → Below Threshold (Bank 1)

P0421 is a generic OBDII trouble code.  It has the same meaning for the Volkswagen Eos as it would any other vehicle.  It is closely related to P0420 (which is the most popular OBD code). Warm Up Catalyst Efficiency → Below Threshold (Bank 1) When it’s the only trouble code present, P0421 will typically not … Read moreVolkswagen Eos: Warm Up Catalyst Efficiency → Below Threshold (Bank 1)

Volkswagen Eos P0411: Secondary Air Injection System → Incorrect Flow Detected

P0411 is a general OBDII trouble code, which means that it has the same meaning for the Volkswagen Eos as it would any other car or truck.  By definition, the code is letting you know that the ECM has detected incorrect flow in the secondary air injection system.  P0411: Secondary Air Injection System → Incorrect … Read moreVolkswagen Eos P0411: Secondary Air Injection System → Incorrect Flow Detected

Volkswagen Eos P0740: Torque Converter Clutch Circuit Malfunction

P0740 is one of the most common transmission trouble codes. It means that the Eos‘s computer has detected that there is an issue with the torque converter clutch (TCC) solenoid circuit.     P0740: Torque Converter Clutch Circuit Malfunction   The TCC “locks” the drivetrain, which allows for a true mechanical connection between the transmission … Read moreVolkswagen Eos P0740: Torque Converter Clutch Circuit Malfunction