Volkswagen Eos:  Bad Knock Sensor Symptoms

Modern vehicles use knock sensors to detect engine detonation.  This allows the PCM (powertrain control module) to run very aggressive spark timing.  If you are concerned that your Volkswagen Eos has a bad knock sensor, we’ve listed them out below. A knock sensor works by listening to your engine and determining if your Eos is … Read more

Volkswagen Eos: AC Compressor Not Turning On – Diagnosis

No matter where you live if your Volkswagen Eos’s AC compressor is not turning on, it can turn a pleasant commute into a nightmare (particularly if you have kids that are riding with you). The AC compressor pulley is always being turned by either the serpentine belt or a dedicated belt (it’s going to depend … Read more

Volkswagen Eos U0101:  Meaning, Causes, + Diagnosis

U0101 is a generic powertrain code, which means it has the same definition for the Volkswagen Eos as it would any other vehicle.  It means that your Eos’s TCM (Transmission Control Module) can’t communicate with the rest of the vehicle, usually due to a bad wiring harness or an issue with the  TCM itself. U0101 … Read more

Volkswagen Eos P219B: Causes, Diagnosis, + Symptoms

P219B is a generic OBD2 trouble code.  This code indicates that your Volkswagen Eos’s air/fuel ratio is out of balance (too rich or too lean) on the bank 2 side of the engine in question. Your Eos is equipped with oxygen sensors that measure the air-fuel ratio of your engine. It’s these sensors that are … Read more

Volkswagen Eos: P219A Meaning, Causes, & Diagnosis

P219A is a generic OBDII code.  The code indicates that your Volkswagen Eos’s air/fuel ratio is out of balance (too rich or too lean). Your Eos is equipped with oxygen sensors that measure the air-fuel ratio of your engine. It’s these sensors that are reporting the problem with the air-fuel ratio.   With P219A are … Read more

Volkswagen Eos U0100:  Lost Communication with ECM/PCM “A”

U0100 is a generic diagnostic trouble code, meaning it has the same definition for any vehicle made in the 1996 model year or newer (including the Volkswagen Eos).  This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. When a vehicle has … Read more

P2097 Volkswagen Eos

P2097 is a generic OBD II code, which means that it has the same meaning for the Volkswagen Eos as it would any other vehicle.  It specifically indicates that your Eos detected that air-fuel mixture reading as the exhaust gas exits the catalytic converter is too rich. (too much fuel for the amount of fuel … Read more

Volkswagen Eos U0073: Meaning, Symptoms, + Diagnosis

U0073 Definition: Control Module Communication Bus”A” Off U0073 is a fairly common trouble code.  It is generic, so it has the same meaning for your Volkswagen Eos as it would any other.  This code appears when something has interrupted the communication between two of your Eos’s control modules. The most common causes of U0073 are … Read more