P1382

P1382 on Peugeot — Alternator not charging, with the red battery light and the general fault light on

All the fault codes

Code P1382 indicates that the alternator speed is inconsistent with engine speed: the auxiliary belt is not driving it as it should. On the Peugeot 308 1.6 HDI the recurring cause is a failed lower auxiliary belt tensioner.

System
Fuel injection
Component
Lower auxiliary belt tensioner
Fault
The alternator is not charging the battery correctly; the red battery warning light and the general fault light are on the instrument cluster.
Typical symptoms
  • The alternator is not charging the battery correctly
  • Red battery warning light on
  • General fault light on
Vehicles affected
  • Peugeot 308 (T7) 1.6 HDI 8v
Main code
  • P1382 Auxiliary belt - inconsistency between engine speed and alternator speed
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.