P154A

P154A on Fiat — Engine cutting out while driving with an ‘Alternator fault’ message

All the fault codes

Code P154A reports faulty operation of the alternator. On the Fiat 500L 1.6 Multijet it appears together with code P065A and shows up as the engine cutting out while driving and an ‘Alternator fault’ message on the instrument cluster.

System
Electronics
Component
Alternator
Fault
The engine cuts out intermittently while driving and is hard to start, with the engine warning light on.
Typical symptoms
  • The engine cuts out intermittently while driving
  • Hard starting
  • Engine warning light on while the fault is present
  • ‘Alternator fault’ message on the instrument cluster display
Vehicles affected
  • Fiat 500L 1.6 Multijet 16v
Main code
  • P154A Generator, faulty or abnormal operation
Related codes
  • P065A Alternator, range or performance inconsistency

On this fault the diagnostic tool often returns several codes together.

Solution

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The cause and the repair are on Sema Repair

On Sema Repair this code is linked to verified case studies, with the confirmed cause case by case, the job step by step, indicative times, the manufacturer's notes and a photograph of the component with the point of intervention highlighted.