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Warning Lights & Codes

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

2014 Prius P0441 P0455 EVAP Diagnosis & Repair

Why It Came In The driver had already been down this road once. A previous mechanic pulled two codes — P0441 (incorrect purge flow) and...

2007 Prius Warning Lights Door Locks Water Leak Fix

Why It Came In The driver arrived after visiting four different shops over the course of roughly $1,500 in repairs — some of that body...

2009 Prius Red Triangle After Oil Change: Rat Debris on the MAF Sensor

A 2009 Prius with 185,000 miles came in on a tow truck. The owner had just left an oil change when the red triangle lit...

2006 Toyota Prius P0A80 P3000 Warning Lights Fixed

What the Driver Noticed The client had been given this 2006 Prius as a donated vehicle. Warning lights came on in February, and a previous...

P0A0F — Engine Failed to Start

What Does P0A0F Mean? P0A0F is set when the hybrid system determines that the gas engine attempted to start but did not. On a hybrid...

2007 Toyota Camry Hybrid P0A80: No Heat & Battery Fault

Why It Came In The driver had noticed the heater going cold during electric-only operation — sitting at a red light, coasting downhill, anywhere the...

2006 Honda Civic Hybrid Dead Battery IMA Replacement

Why It Came In The driver had been to a Honda dealership the week before, where they were told the hybrid battery needed replacement but...

P0A80 — Replace Hybrid Battery Pack

What Does P0A80 Mean? P0A80 is set by the hybrid system's battery control module when it detects that the high-voltage battery pack can no longer...

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,...

2014 Prius P0441 P0455 EVAP Diagnosis & Repair

Why It Came In The driver had already been down this road once. A previous mechanic pulled two codes, P0441 (incorrect purge flow) and P0455...

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 Prius's MPG Drops in Winter — The Most Common Causes (And Why It’s Usually Normal) Cold weather is one of the most common...