Your vehicle is getting too much air and not enough fuel, creating a lean condition that disrupts the fuel efficiency of your vehicle. Bank 1 refers to the oxygen sensor on the number one …

When it is operating properly, the EVAP system contains fuel vapors and prevents them from escaping into the environment. A significant leak in this system results in error code P0440. …

Want to diagnose engine issues fast? Learn how to read spark plugs, identify rich or lean conditions, spot oil burning, and use a spark plug color chart for easy analysis.

When your powertrain/engine control module receives a reading that indicates there’s too much oxygen and the ratio is incorrect, it sends an error code P0171 or P0174.

Whether a simple or advanced approach takes care of your evaporative emission system leak detected DTC, finding the source of the code is essential both for ensuring your vehicle’s …

Wondering why the check engine light is on and what is has to do with code P0456? Your vehicle has a complex evaporative emissions system to prevent fuel vapors from leaking into your …

When you’re diagnosing P0700, you’ll need to look at the freeze frame data to see what occurred when the check engine light was set. It could be a slipping converter clutch that is causing the …

While there are many causes and some symptoms of this error code, the important question is how do I fix trouble code P0507? Find out how to troubleshoot this OBD-II scanner code today.

P0520 Code: Engine Oil Pressure Sensor/Switch Circuit Learn about the P0520 code, which signals a problem with your engine's oil pressure sensor or circuit. Discover symptoms, …

Unfortunately, finding the cause of the OBD-II scanner error code P0441 problem can be difficult. There are several components in the EVAP system and if any of them are malfunctioning or …