Can a bad PCV valve cause a check engine light?
Symptoms of a Stuck Open PCV Valve A PCV valve stuck open can trigger the “check engine” light due to increased airflow. A diagnostic computer may erroneously blame this light on a mass airflow sensor or oxygen sensor instead, making it harder for you to detect the real source of the problem.
Can a bad battery cause EPC light?
An EPC light is caused by a fault condition in the electronic throttle body, but again, voltage surges from jump starting or really low battery can cause all kinds of problems.
What happens when the EPC light comes on?
Your EPC Volkswagen warning light, also known as the Electronic Power Control warning light, is an indicator pointing to issues with your Volkswagen’s throttle system. This could mean that the throttle pedal, throttle body, traction control, or cruise control unit need attention.
Can a bad PCV valve cause the Check Engine light to come on?
A bad PCV valve, can in some vehicles, cause oil to blow onto the air filter element. If you see a dirty or oily spot near to the PCV inlet hose, then this is an indication of a bad PCV valve. If the PCV valve sticks open, it may cause the check engine light to come on.
What are the symptoms of a stuck PCV valve?
Symptoms of a Stuck Open PCV Valve 1 Engine misfires at idle 2 Lean air-fuel mixture 3 Presence of engine oil in PCV valve or hose 4 Increased oil consumption 5 Hard engine start 6 Rough engine idle 7 Possibly black smoke 8 Oil fouled spark plugs More
What causes the EPC warning light to come on?
Here are just a few of the issues that could be indicated by the EPC dashboard warning light: 1 Engine Speed Sensor Malfunction 2 Brake Light Switch Malfunction 3 Mass Air Flow Sensor Malfunction 4 Problem with the Cruise Control 5 Problem with the Throttle System
Can a bad PCV valve cause an intake leak?
Because of the issues discussed, a faulty PCV valve can have the same symptoms as an intake leak, and the air/fuel mixture can end up being wrong. Usually, your air/fuel mixture will become lean, and you can feel the same symptoms as from a lean mixture.