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florianhartmann6

Honda HRV AdBlue System Error

My 2021 Honda HRV diesel is throwing errors at 174447 km. The speedometer says 'AdBlue tank empty' even though it's full. Diagnostic tool shows an AdBlue system error, and the engine won't start. I suspect a defective AdBlue output from the tank to the dosing unit. Anyone experienced similar? Maybe related to emissions control or the SCR catalyst?

Summary of the thread

A 2021 Honda HRV diesel displayed an 'AdBlue tank empty' error despite being full, preventing the engine from starting. The issue was suspected to be a defective AdBlue output from the tank to the dosing unit, possibly related to emissions control or the SCR catalyst. After professional diagnosis, the problem was confirmed to be a faulty AdBlue pump, which was replaced to resolve the issue.

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4 comment(s)

linakrause46

Sounds familiar. Had the exact same symptoms – error message and all – with my old Opel Astra. But mine still started though. Is the service light on?

florianhartmann6 (community.author)

Yep, service light is on constantly now. Did you ever figure out what was specifically causing the issue on your Astra? Trying to get an idea of what I'm facing here.

linakrause46

Didn't dive too deep myself. Just took it to a workshop. Turned out to be some AdBlue pump issue as well. Might be best to get yours checked professionally.

florianhartmann6 (community.author)

Cheers, appreciate the input. Took it to the shop. Turns out the AdBlue pump was indeed faulty, as suspected. Replacement and refill cost me around 250€. Hopefully, that's the end of it.

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HONDA

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HRV