The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

2020 Outlander PHEV - 'Service Required' for EV System / Charging Issue

0

Chris P. · rep 0 · May 22, 5:35 AM · 1 replies · solved · Question

Vehicle: 2020 Mitsubishi Outlander PHEV GT

Hey everyone,

I'm having a persistent issue with my 2020 Mitsubishi Outlander PHEV GT. Recently, I've been getting a 'Service Required' message on the dash, specifically related to the EV system. Sometimes it pops up when I start the car, and other times it appears while driving or even when I try to plug it in to charge.

When the message is active, the car often won't allow me to charge, or it charges very slowly. I've also noticed a slight reduction in EV range, though it's hard to tell if that's just my imagination. I've tried using different charging stations and cables, but the problem persists. The 12V battery seems fine, as the car starts without issues.

Has anyone else experienced this with their Outlander PHEV? What could be causing this electrical glitch? I'm hoping it's not a major battery pack issue.

✓ Accepted solution

ClearTheCode Admin

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

0

ClearTheCode admin answer:

This 'Service Required' message on your 2020 Mitsubishi Outlander PHEV, especially when linked to charging issues and EV system warnings, points to a potential problem within the high-voltage battery system or its associated electronics. Given the complexity of PHEV systems, professional diagnosis is often necessary, but here are some common causes and initial checks:

  1. Check 12V Battery Health: Even though your car starts, a weak 12V battery can cause a cascade of electrical issues in modern vehicles, including false warnings or problems with high-voltage system communication. Have it tested at an auto parts store.
  2. Inspect Charging Port and Cables: Visually inspect your vehicle's charging port for any debris, corrosion, or damage. Ensure your charging cables are in good condition and fully seated during charging attempts.
  3. OBD-II Scan for Codes: A professional scan tool (or even a consumer-grade one if you have access) can pull specific diagnostic trouble codes (DTCs) from the vehicle's various modules. For PHEV systems, common codes related to your symptoms might include:
    • P0AA6: Hybrid Battery Voltage System Isolation Fault
    • P0A80: Replace Hybrid Battery Pack
    • P0A00-P0A0F range: General High Voltage System Malfunctions
    • U0xxx codes: Communication errors between modules.
  4. Potential Causes:
    • High-Voltage Battery Cell Imbalance or Degradation: Over time, individual cells within the main battery pack can become imbalanced or degrade, triggering warnings.
    • On-Board Charger (OBC) Malfunction: The OBC converts AC power from the grid to DC power for the battery. A fault here would directly impact charging.
    • DC-DC Converter Issues: This component converts high-voltage DC to low-voltage DC to charge the 12V battery and power accessories. A fault could indirectly affect system operation.
    • High-Voltage Wiring or Sensor Faults: Damaged wiring, connectors, or faulty sensors within the high-voltage system can trigger safety warnings.
    • Software Glitch: Less common, but sometimes a system reset or software update can resolve electronic anomalies.

When to See a Shop:

It is highly recommended to take your Outlander PHEV to a Mitsubishi dealership or a certified hybrid/EV specialist as soon as possible. High-voltage systems require specialized training and equipment for safe diagnosis and repair. Ignoring these warnings can lead to further damage, reduced vehicle performance, or even safety risks. Provide them with a detailed description of when the warning appears and any associated symptoms.

Menu

Help & account