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2022 R1S Not Charging - 'Charging System Fault' Message

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Mike T. · rep 0 · May 25, 5:03 AM · 1 replies · solved · Question

Vehicle: 2022 Rivian R1S Adventure Package

I'm having a significant problem with my 2022 Rivian R1S. For the past two days, it won't accept a charge from either my home Level 2 charger or a public DC fast charger. Each time I plug it in, I get a 'Charging System Fault' message on the screen, and the charging process never initiates.

I've tried different cables and charging stations, but the result is the same. The vehicle has about 20,000 miles on it. I checked the charging port for any visible debris or damage, but it looks clean. The 12V battery seems fine, as all other systems are working normally.

Has anyone else experienced a persistent 'Charging System Fault' with their Rivian? Is this typically a software issue, an onboard charger problem, or something else entirely? Any advice before I contact service would be great.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 5:03 AM

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ClearTheCode admin answer:

A 'Charging System Fault' preventing your 2022 Rivian R1S from charging is a critical issue that points to a problem within the vehicle's charging hardware or its communication systems.

Possible Causes:

  1. On-Board Charger (OBC) Failure: The OBC is responsible for converting AC power from Level 1/2 chargers into DC power for the battery. A fault within the OBC is a common reason for charging issues. This could be an internal component failure or a software glitch within the OBC itself. OBD-II codes like P0D2A (On-Board Charger Input Power Circuit/Open) or P0D2F (On-Board Charger Output Voltage Sensor Circuit) are possible.
  2. Charging Port (Charge Inlet) Issue: While you've checked for visible damage, internal pins, sensors, or the locking mechanism within the charging port could be faulty, preventing proper communication or connection with the charger.
  3. Battery Management System (BMS) Fault: The BMS monitors and controls the battery's charging and discharging. If the BMS detects an unsafe condition or experiences an internal fault, it can prevent charging to protect the battery.
  4. EVSE (Electric Vehicle Supply Equipment) Communication Error: The vehicle and charger communicate extensively before charging begins. A breakdown in this communication (due to vehicle-side hardware/software or even a charger-side issue, though less likely if multiple chargers fail) can halt the process. OBD-II codes such as P0D2F (EVSE Communication Error) are relevant here.
  5. High-Voltage Contactor Issue: Contactors are switches that connect the high-voltage battery to the rest of the system. A faulty contactor could prevent the charging current from reaching the battery.

Recommended Steps:

  1. Try a Different Charger/Cable (Already Done): You've already done this, which helps rule out the charging station or cable as the primary culprit.
  2. Check for Software Updates: Ensure your Rivian's software is up to date. Occasionally, software bugs can affect charging protocols, though a persistent fault often indicates hardware.
  3. Perform a Hard Reset (If Comfortable): Some users report temporary issues resolved by a full vehicle restart (often involving disconnecting the 12V battery for a few minutes, if accessible and you are comfortable with the procedure – consult your owner's manual or Rivian support first).

When to See a Shop:

Immediately. The inability to charge renders your EV unusable. This issue requires professional diagnosis using Rivian-specific tools to identify the exact fault code and component. Contact Rivian Service to schedule an appointment or arrange for a tow. Do not attempt to force charging, as this could lead to further damage or safety risks.

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