AutoCodes – Chrysler – P1682 Chrysler

P1682 Chrysler Code - Charging System Voltage Too Low

Quick Answer

The Powertrain Control Module (PCM) tries to maintain a system voltage between 12.9 and 15.0 volts. Common causes include Faulty generator (alternator), Defective or Loose generator belt, Generator harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1682 Chrysler indicates Charging System Voltage Too Low.
Common causes: Common causes include Faulty generator (alternator), Defective or Loose generator belt, Generator harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 10,045

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 07, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1682 Chrysler Description

The Powertrain Control Module (PCM) tries to maintain a system voltage between 12.9 and 15.0 volts. The voltage determined by the PCM as the final goal for the charging system is called "control" voltage. This control voltage is determined from the battery temperature sensor (ambient sensor). The control voltage is compared to the sensed voltage continuously during running. The PCM controls battery voltage by energizing and de-energizing the alternator field winding. When the battery voltage falls below a setpoint voltage, the generator field winding is energized until the battery voltage exceeds a set point.

OBDII Code P1682 Chrysler - Charging System Voltage Too Low - AutoCodes.com — P1682 Chrysler Code - Charging System Voltage Too Low

What does this mean?

What are the Possible Causes of the DTC P1682 Chrysler?

Faulty generator (alternator)
Defective or Loose generator belt
Generator harness is open or shorted
Generator circuit poor electrical connection

How to Fix the DTC P1682 Chrysler?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1682 Chrysler code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.