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2018 Outlander Battery Light On & Slow Cranking - P0562 Code

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Dan C. · rep 0 · May 22, 5:35 AM · 1 replies · solved · Question

Vehicle: 2018 Mitsubishi Outlander SEL

Hey everyone, I'm having some trouble with my 2018 Mitsubishi Outlander SEL. For the past few days, I've noticed the battery light flickering on the dash, and sometimes it stays on.

Starting the car has become a bit sluggish, especially in the mornings. It cranks slowly, almost like the battery is dying. I decided to check for codes and pulled a P0562, which points to low system voltage.

I'm wondering if this is a common issue with these Outlanders or if it's likely just a failing battery or alternator. Any advice on what I should check first before taking it to a shop?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:35 AM

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ClearTheCode admin answer:

The P0562 diagnostic trouble code (DTC) indicates a 'System Voltage Low' condition, which is a clear sign that your 2018 Mitsubishi Outlander's charging system isn't operating as it should. This code is often triggered when the battery voltage drops below a specified threshold for a certain period.

Here are the common causes and diagnostic steps:

  1. Failing Battery: Even if it's charging, an old or weak battery might not hold a charge effectively, leading to low system voltage, especially during startup.
  2. Faulty Alternator: The alternator is responsible for generating power to run the vehicle's electrical systems and recharge the battery while the engine is running. A failing alternator won't produce enough voltage.
  3. Loose or Corroded Battery Terminals: Poor connection at the battery terminals can restrict current flow, leading to charging issues and low voltage readings.
  4. Damaged Wiring or Fuses: A break in the charging system wiring or a blown fuse (e.g., alternator fuse) can interrupt the power flow.
  5. Faulty Voltage Regulator: Often integrated into the alternator, the voltage regulator controls the output voltage. If it fails, it can cause overcharging or undercharging.

Initial Diagnostic Steps:

  • Check Battery Terminals: Visually inspect your battery terminals for any corrosion or looseness. Clean them thoroughly and ensure they are tightly secured.
  • Test Battery Voltage:
    • With the engine off, a healthy battery should read around 12.6 volts.
    • With the engine running, the voltage should be between 13.5 and 14.5 volts, indicating the alternator is charging.
  • Test Alternator Output: Many auto parts stores offer free battery and alternator testing. This can quickly confirm if your alternator is producing adequate power.

When to See a Shop:

If basic checks like cleaning terminals and testing the battery/alternator don't resolve the issue, or if the problem persists, it's time to consult a qualified mechanic. They can perform more in-depth diagnostics, such as:

  • Parasitic Draw Test: To check if something is draining the battery when the car is off.
  • Detailed Wiring Inspection: To find any hidden breaks or shorts in the charging system.
  • Advanced Alternator/Regulator Testing: To pinpoint internal failures.

Addressing this promptly is important to prevent further electrical system damage or being stranded.

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