P2503 - Charging System Voltage Low

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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P2503 Possible Causes

  • Faulty Generator (Alternator)
  • Generator harness is open or shorted
  • Generator circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

First diagnose P2503 code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

Cost of diagnosing the P2503 code

    Labor: 1.0

    The cost of diagnosing the P2503 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

P2503 Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P2503 Description

The Powertrain Control Module (PCM) monitors the charging system for changes in the output voltage. The PCM set the OBDII P0503 code when the output voltage is out of factory specifications.
OBDII Code P2503 - Charging System Voltage Low - AutoCodes.com

P2503 More Information

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P2503 Information for specific makes

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Related Information

P2503 Comments

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