Known faults for the Fiat Marea.

Engine / equipment

Only configurations, equipment and VINs included in the documented assignments.

Period mentioned

Repairer-sheet period/subversions stated in each assignment.

Symptoms

C0121 valve-relay code; verify diagnosis and installed ABS.

Possible cause described

ECU Repair Centre reports C0121 valve-relay faults in the Marea Kelsey-Hayes module; it does not specify the underlying internal component.

Check for the garage

Confirm module reference and diagnose C0121; check the circuit before sending the module to a specialist for evaluation/repair.

Cost cited in the source

No verifiable estimate; request a diagnostic and repair quotation.A rough figure from the original database, not an up-to-date quote.

Sources from the original database

Engine / equipment

1.9 JTD / Multijet (8 and 16 valves), 2.4 JTD and JTDm in Fiat, Alfa Romeo 147, 156, 159, GT and Brera, Lancia and the Opel 1.9 CDTI

Period mentioned

1997–2012

Symptoms

Power loss, rough idle and an engine light with “swirl actuator malfunction”; soot around the intake manifold; vibration and knocks in low gears (dual-mass flywheel).

Possible cause described

On the 16-valve 1.9 and 20-valve 2.4, the intake flaps seize with EGR soot and oil, and the control rod comes off as its plastic bushes wear. The EGR fouls in town use and the dual-mass flywheel wears between 80,000 and 150,000 km. The 8-valve 1.9 has no flaps.

Check for the garage

Check the rod and flap operation on top of the manifold, read actuator codes, inspect the EGR and listen to the flywheel when starting and stopping.

Cost cited in the source

Intake manifold: €400–900 in parts; EGR cleaning: €150–250A rough figure from the original database, not an up-to-date quote.

Mileage cited in the database: 80,000–150,000 km. This is not a maintenance interval and does not predict a failure.

Sources from the original database