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Warning Lights & Codes

Understanding check engine lights, hybrid system warnings, and diagnostic codes.

Thousands in Prius Parts Replaced. It Just Needed Gas.

A 2010 Prius owner had been fighting a "check hybrid system" message. They'd replaced the hybrid battery, the inverter, both water pumps, the MAF sensor,...

Gen 3 Prius EVAP Diagnosis: Why Replacing Parts Without Testing Doesn't Work (P0441, P0455)

This is a classic example of why throwing parts at fault codes without proper diagnosis wastes time and money. The Fault Codes We Found When...

How We Diagnose Toyota Hybrid Problems: The 6-Step Process

When your Toyota hybrid comes in with a warning light or a driveability concern, we don't just plug in a scanner and read the first...

Why is my Prius getting bad MPG?

Why Your Toyota Hybrid’s MPG Drops in Winter (And Why It’s Usually Normal) As the temperature drops, our shop gets a surge of calls from...