Rivian EV home charger shows E002 and refuses to energize; vehicle reports ‘Check power source’

Safety first: This fault involves mains voltage. If you are not comfortable working inside a panel, contact a licensed electrician.

• Step 1 – Verify breaker and wiring: Confirm the Rivian charger is on the correct double-pole breaker size specified in the installation manual (commonly 60A for 48A output). Ensure aluminum or copper conductors match the required gauge.
• Step 2 – Check for loose terminations: Turn OFF the breaker. Remove the charger’s front cover. Inspect the L1, L2, and ground terminals on the internal terminal block. Tighten any loose lugs to the torque specified by Rivian (use a torque screwdriver if available).
• Step 3 – Measure voltage: With the cover back on and breaker ON, a qualified person should measure voltage at the charger input: L1–L2 should be around 240V, L1–ground and L2–ground around 120V each. If readings are outside ±10%, the supply is suspect.
• Step 4 – Check neutral (if used): If your installation uses a neutral for control electronics, verify it is properly landed and not shared with other circuits in violation of code.
• Step 5 – Utility issues: If voltage is unstable or low under load, contact your utility provider.

If E002 persists after confirming correct wiring and voltage, the internal power supply or sensing circuit on the Rivian charger control board may be defective and should be replaced by a technician.