The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

2022 Lucid Air: "Reduced Power" Warning and Check EV System Light

0

Eric V. · rep 0 · May 22, 7:25 AM · 1 replies · solved · Question

Vehicle: 2022 Lucid Air Grand Touring

Hey everyone,

I'm experiencing a concerning issue with my 2022 Lucid Air Grand Touring. While driving yesterday, I suddenly got a 'Reduced Power' message on the dash, accompanied by a 'Check EV System' warning light. The car immediately felt sluggish, and acceleration was significantly limited.

I pulled over, turned the car off, and restarted it, but the warnings reappeared after a few minutes of driving. Charging seems to work fine, and there are no strange noises, but the reduced power mode is definitely active. I've checked the owner's manual, but it mostly advises to see a service center.

Has anyone else encountered this with their Lucid Air? What could be the common culprits for such a warning? Any initial checks I can perform before scheduling a service appointment?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 7:25 AM

0

ClearTheCode admin answer:

Experiencing a 'Reduced Power' message and 'Check EV System' light on your 2022 Lucid Air is a critical diagnostic issue that requires prompt attention. This indicates a problem within the high-voltage powertrain or related control systems. Here's a breakdown of potential causes and recommended steps:

  1. Initial Checks (Limited):

    • Restart Cycle: While you've tried this, sometimes a second or third full power cycle (turning off, waiting a minute, then restarting) can clear a transient software glitch. If the warning immediately returns, it's likely a persistent hardware or software fault.
    • Charging Port: Briefly inspect your charging port for any visible debris or damage, though this is less likely to cause a driveability issue.
    • 12V Battery: A weak or failing 12V auxiliary battery can cause a cascade of seemingly unrelated electrical warnings in EVs. While less common in newer vehicles, it's a possibility.

  2. Common Causes for 'Reduced Power' / 'Check EV System':

    • High Voltage Battery System Fault: This is a primary suspect. It could involve an issue with individual battery cells, the Battery Management System (BMS), a high-voltage contactor, or temperature sensors within the battery pack. The system might be limiting power to protect the battery.
    • Powertrain Inverter/Motor Issue: Problems with one of the electric motors or their associated inverters (which convert DC battery power to AC for the motors) can trigger these warnings and limit power output.
    • High Voltage Interlock Loop (HVIL) Fault: This safety system ensures all high-voltage components are properly connected and secure. A break in this loop can immediately shut down or limit the HV system.
    • Software Glitch: While less likely to cause persistent reduced power, a significant software bug could misinterpret sensor data and trigger warnings.
    • Sensor Malfunction: A faulty sensor (e.g., current sensor, voltage sensor, temperature sensor) within the EV powertrain can send incorrect data, leading the vehicle's computer to initiate a 'Reduced Power' mode for safety.

  3. When to See a Shop:

    • Immediately. Given the 'Reduced Power' message and 'Check EV System' light, it is highly recommended to contact Lucid service as soon as possible. This is not a problem that typically resolves itself or can be easily diagnosed at home.
    • Avoid Driving Long Distances: If the vehicle is in 'Reduced Power' mode, it's best to minimize driving to prevent potential further damage or stranding yourself.
    • Specialized Tools Required: Lucid service centers have proprietary diagnostic tools that can read specific EV diagnostic trouble codes (DTCs) and pinpoint the exact component or system causing the fault. Generic OBD-II scanners may not be able to access the detailed EV system codes.

Do not attempt to diagnose or repair high-voltage components yourself, as this can be extremely dangerous.

Menu

Help & account