Awasome Toyota Highlander Check Engine Light Flashing 2023. Toyota highlander owners have reported 23 problems related to check engine light on (under the engine and engine cooling category). Your catalytic converter is bad or going bad.
Dtc’s really help save time determining what is wrong with your vehicle. Also had the check engine light flash me going up a steep grade at 50mph in 3rd gear. If the check engine light in your toyota highlander starts flashing, that means that the problem needs fast attention and your toyota should be transported in immediately.
