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2017 MAZDA MAZDA3

2.0L I4FWDAUTOMATICgas
2 active safety recalls on this vehicle — view recalls
Repairs0Labor479Torque4866Fluid6DTC917Battery0Maintenance0Recalls2
P2500high severityPowertrain

Generator Lamp/L Terminal Circuit Low

on 2017 Mazda Mazda3 2.0L I4 · FWD

What this code means

Low signal on the alternator lamp/exciter circuit, preventing proper charging regulation.

Symptoms

  • Battery light on
  • Low charging voltage
  • Check engine light

Common causes

  • Broken exciter wire
  • Failed voltage regulator
  • Corroded alternator connector
  • Blown dash bulb

Diagnostic steps

  1. Check charging system voltage
  2. Inspect alternator connector
  3. Measure exciter circuit voltage

Repair notes

Repair exciter circuit wiring or replace alternator.

Other Powertrain codes on this vehicle

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