Location: 405 Keyes St ., San Jose, CA, 95112

Hours: Mon - Fri | 8:00 AM TO 4:30 PM

Check Engine Light Diagnostics in San Jose, CA

Is Your Check Engine Light On?

A check engine light can create a lot of questions, especially when your vehicle still seems to be running normally.  The warning could be connected to a sensor, fuel system, ignition problem, emissions component, electrical issue, engine concern, or even a transmission-related fault.  At Leale’s Transmissions & Auto Repair, we provide professional check engine diagnostics in San Jose to determine what is triggering the warning and help you understand what needs to happen next.

 

Leale’s has served San Jose drivers since 1963 and works on both import and domestic vehicles, including diesel pickup trucks.  

What Does the Check Engine Light Tell You?

Your vehicle's computer monitors numerous systems while the engine is operating. When it detects a condition outside its programmed parameters, it can record a diagnostic trouble code and illuminate the check engine light. The code provides technicians with useful information, but it isn't necessarily a complete diagnosis.


For example, a sensor-related code doesn't automatically mean the sensor itself has failed.

There could be an electrical problem, wiring issue, vacuum leak, fuel problem, or another condition causing the sensor to report an abnormal reading.

check engine light

Common Causes of a Check Engine Warning

There are many reasons your dashboard warning may appear, including:


  • Engine performance problems
  • Oxygen sensor faults
  • Ignition system concerns
  • Fuel-delivery issues
  • Air-intake problems
  • Vacuum leaks
  • Electrical faults
  • Emissions-system problems
  • Catalytic converter concerns
  • Faulty engine sensors
  • Fuel injector issues
  • Transmission-related problems


The correct repair depends on the results of the diagnostic process.

Frequently Asked Questions – Check Engine Light