KNOWN FAULTS · Fiat

Fiat 500L 0.9 TwinAir common problems.

2012–2022 · Petrol

Sources are not verified in real time and no entry confirms that your car is affected.

1 known fault with sources

MultiAir actuator starved of oil pressureValvetrain (MultiAir actuator)

Engine / equipment: 1.4 MultiAir (naturally aspirated and turbo) and the 0.9 TwinAir, which uses the same system: Fiat 500, Punto, Tipo, 500X; Alfa MiTo and Giulietta; Jeep Renegade and Compass; Abarth
Period mentioned: 2009–2024
Symptoms: Hard or rough cold starts, hesitation, stalling and an engine light with P1523 (low oil pressure in the MultiAir system).
Possible cause described: The intake valves are operated by oil pressure through an electro-hydraulic block. Degraded oil, a low level or a dirty secondary filter starve the system of pressure, and over time the actuator fails internally.
Check for the garage: Change the oil and filter with the correct specification, inspect the MultiAir mesh filter and measure oil pressure before replacing the actuator.
Cost cited in the source: Oil change: the cheapest step and often enough; MultiAir actuator: approx. €650–1,400 (converted from dollars)A rough figure from the original database, not an up-to-date quote.