Estima diesel power loss and error code

I'm having a real headache with my 2003 Toyota Estima diesel. It's only done 75960 km, but recently the engine power has dropped off! Plus, I plugged in a code reader and it's showing an error stored in the error memory. Could this be a dodgy engine control unit? Any ideas?

4 comment(s)

Sounds familiar. I had similar issues with my old Renault Scenic. Reduced power, error codes... Could it be the main relay causing the ECU to malfunction? Has anyone suggested checking that?

A relay? Hmm, I haven't looked at that. Where exactly is the main relay located, and is it easy enough to test myself?

On the Scenic it was near the battery. Honestly, I wouldn't mess with it too much yourself. I ended up taking it to a workshop in the end. Might be worth getting it checked out by a pro before you make it worse.

Thanks for the advice! I took it to a local garage, and you were spot on – it was the main relay causing the ECU issues. They replaced it for 120€, and it's running like new again!

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