andreasguenther3

Allion Hybrid Fuel Pump Connector Issue

I'm having issues with my 2023 Toyota Allion hybrid. The engine sometimes won't start, stalls at idle, the check engine light is on, it runs rough, and fuel consumption is up. Mileage is 86005 km. Error memory shows a defective fuel pump, but I think it might be a bad cable or plug.

A 2023 Toyota Allion hybrid is experiencing starting issues, stalling at idle, rough running, increased fuel consumption, and a check engine light, with an error memory indicating a defective fuel pump. The owner suspects a bad cable or plug might be the cause. After considering the fuel pump relay as a potential issue, it was confirmed that the problem was indeed a defective connector, which was repaired for 95€.

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4 comment(s)

My 2018 Camry had similar symptoms before the fuel pump failed completely. Did you check the fuel pump relay? A bad relay can act like a failing pump.

Thanks! The fuel pump relay seems unlikely but possible. Can you tell me more about the diagnostic process, including where the relay is?

On my Camry, the relay was in the engine compartment's fuse box. I tested it by swapping it with the horn relay to see if the starting problem went away. If you're not sure, get a qualified technician; fuel system work can be dangerous.

I appreciate the advice. The fuel pump relay wasn't the problem. It was a defective connector, like I thought. Repair cost 95€ Thanks again.

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TOYOTA

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ALLION