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selina_frost1

Peugeot 3008 mixture preparation error

Alright Peugeot gurus, I'm pulling my hair out! My 2009 Peugeot 3008 diesel is throwing a 'mixture preparation error'. It's got 102037 km on the clock. The check engine light is on, power is way down, the engine runs rough, jerks when I accelerate, and sometimes even stalls at idle. Could it be the oxygen sensor or a rich mixture? I'm lost!

Summary of the thread

A 2009 Peugeot 3008 diesel is experiencing a 'mixture preparation error,' leading to a check engine light, reduced power, rough engine performance, jerking during acceleration, and occasional stalling. Possible causes discussed include issues with the oxygen sensor, a rich mixture, the mass airflow sensor, or the intake manifold. The problem was ultimately identified as a defective injector valve, which was repaired, resolving the issues.

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4 comment(s)

oliver_schulze5

Whoa, sounds rough! I had something similar with my 3008. Have you checked the mass airflow sensor or the intake manifold? Could be a vacuum leak somewhere messing things up.

selina_frost1 (community.author)

Interesting! Mass airflow sensor or intake manifold, huh? What kind of symptoms did you have exactly, and what ended up being the problem?

oliver_schulze5

Yeah, the check engine light was on, and it felt like the car was struggling to breathe, especially when accelerating. Never stalled completely though. I ended up taking it to a workshop, and they sorted it out pretty quick. Might be worth doing the same!

selina_frost1 (community.author)

Okay, that's super helpful! Thanks for the insight. I'll take it to a shop and mention the mass airflow sensor and intake manifold. Just got it back! Turns out it was a defective injector valve. Cost me 515€ to fix, but it's running like new again!

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PEUGEOT

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3008