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Engine management light on the Citroen C5 Aircross 1.5 BlueHDi. Common causes include EGR valve carbon deposits, DPF blockage, and inlet swirl flap failure. The 1.5 BlueHDi (DV5) engine in the C5 Aircross requires regular 15,000 km oil changes with the correct PSA B71 2290 specification oil. Extended oil change intervals cause rapid EGR and DPF deterioration. A full diagnostic scan is required to identify the specific fault before any parts are ordered.
Based on 57 driver confirmations
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Citroen C5 Aircross 2019 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
Fault light with rough running and slight misfire. Dealer diagnosed a faulty injector on cylinder 2. Replaced under warranty at 42k miles. Running perfectly now. Worth pushing Citroen for goodwill if out of warranty — they know about this engine.
Parts replaced: Fuel injector (cylinder 2)
Engine fault light came on at 38k miles. Code pointed to EGR. Mechanic removed and cleaned the EGR valve — absolutely caked in carbon, barely opening. Cleared codes and light hasn't returned in 4 months. Recommend EGR clean every 30k on these engines.
Parts replaced: EGR cleaner
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