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"Charging Error" Message on 2023 Taycan 4S - Won't Charge

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Mike T. · rep 0 · May 25, 4:48 AM · 1 replies · solved · Question

Vehicle: 2023 Porsche Taycan 4S

My 2023 Porsche Taycan 4S is giving me a "Charging Error" message every time I try to plug it in, both at home (Level 2) and at public DC fast chargers. It just won't initiate charging. I've tried different cables and chargers, but the error persists.

The car drives fine otherwise, but I can't recharge it! This is a huge problem. Is this a known software bug or a hardware problem with the charging system? The car has only 8,000 miles on it.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 4:48 AM

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ClearTheCode admin answer:

A persistent "Charging Error" on your 2023 Porsche Taycan 4S, especially when it occurs with multiple charging stations and cables, points to an issue with the vehicle's onboard charging system rather than the external charging equipment. Given the car's low mileage, it's unlikely to be due to wear and tear, suggesting a component failure or a software glitch.

Here are the most common potential causes:

  1. Charging Port/Inlet Assembly Failure: The charging port itself contains various sensors and communication pins that interact with the charging station. Damage, corrosion, or a fault within this assembly can prevent the car from recognizing the charger or initiating the charging handshake.
  2. Onboard Charger (OBC) Malfunction: The OBC is responsible for converting AC power from Level 2 chargers into DC power for the battery. A fault in the OBC (or one of its power electronics components) would prevent AC charging. While DC fast charging bypasses the OBC, issues with its associated control modules can still interfere with the overall charging process.
  3. Battery Management System (BMS) Fault: The BMS monitors the battery's health, temperature, and charging parameters. If the BMS detects an anomaly or has an internal fault, it can prevent charging to protect the battery.
  4. High-Voltage (HV) System Contactor/Relay Issue: The HV system uses contactors to connect and disconnect the battery from the rest of the vehicle's HV components. A stuck or faulty contactor could prevent the charging circuit from closing.
  5. Software Glitch: While less common for persistent, complete charging failure across multiple chargers, a software bug in the vehicle's charging control unit could potentially prevent charging. A system reset or software update might resolve this, but it's usually not the primary suspect for a hard failure.

When to See a Shop:

  • Immediately. Your Taycan cannot be recharged, rendering it unusable once the current battery charge is depleted. This is a critical issue that requires prompt attention.
  • You should contact a Porsche dealership. They have the specialized diagnostic tools (PIWIS) and technical expertise required to diagnose high-voltage EV systems. They can read specific fault codes from the charging control units, perform necessary tests, and safely work on the high-voltage components. Do not attempt to diagnose or repair high-voltage charging systems yourself due to the severe electrical hazards.
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