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2014 JEEP CHEROKEE
2.4L I4•4WD•AUTOMATIC•gas
13 active safety recalls on this vehicle — view recalls
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Repairs0Labor1094Torque7236Fluid16DTC1816Battery2Maintenance0Recalls13
P1594moderate severityPowertrain

Charging System Voltage Too High

on 2014 Jeep Cherokee 2.4L I4 · 4WD

What this code means

The PCM has detected that the charging system voltage is above the acceptable range. The voltage regulator in the alternator is allowing excessive voltage, which can damage electrical components and boil battery electrolyte.

Symptoms

  • Check Engine Light
  • Battery warning light may illuminate
  • Electrical components failing prematurely
  • Battery swelling or leaking
  • Headlights excessively bright

Common causes

  • Faulty voltage regulator in alternator
  • Poor ground connection at alternator
  • Corroded battery cables
  • Faulty PCM voltage sense circuit
  • Wiring issue in charging circuit

Diagnostic steps

  1. Measure charging voltage at battery with engine running (should be 13.5-14.8V)
  2. Check alternator ground connection
  3. Inspect battery cables and terminals for corrosion
  4. Test voltage regulator function
  5. Check PCM voltage sense wire

Repair notes

Replace the alternator if the voltage regulator is causing overcharging.

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Other Powertrain codes on this vehicle

🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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