hermannhartmann9

Rifter AdBlue Empty Engine Start Failure

I'm having an issue with my 2018 Peugeot Rifter diesel, it has about 80000 km on it. The AdBlue tank seems empty even after refilling. There's an error message on the speedometer and error codes stored. Now the engine won't start. I think there's a problem with the AdBlue output from the tank to the dosing unit. Could this be the cause? What's the best next step?

4 comment(s)

I had a similar thing with my Rifter, though mine's older. The error message and engine starting problems definitely point to the AdBlue system. The dosing unit is a likely cause. It injects AdBlue into the exhaust to cut NOx emissions, so if the output's bad, it'll trigger those errors. Check the service light, too. You have to keep up with the system, or it can mess with the injection and emission standards.

Thanks. Did you have a complete engine start failure? Did a diagnostic check specifically point to the dosing unit, or were there other things involved? Do you remember if you had similar mileage?

Yes, I had a complete engine start failure. The diagnostic pointed right at insufficient AdBlue being injected because of a faulty dosing unit. For me, it was a partially blocked injector and a failing pump inside the AdBlue tank. Given what you're seeing, I'd get a full diagnostic check at a good workshop to find the exact cause. At 80000 km, you're at the point where failures can happen.

Thanks for confirming and explaining it. I'll get it diagnosed and repaired at a workshop. I'm expecting it to cost around 250€. Thanks again.

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