B1820 — Wiper Rear Motor Up Relay Coil Circuit Short To Battery

What it means

B1820 is an OBD-II diagnostic trouble code: Wiper Rear Motor Up Relay Coil Circuit Short To Battery.

Typical fix

Confirm the code with an OBD-II scanner, then inspect the component or circuit named above. Consult a vehicle-specific service manual for the full diagnostic and repair procedure.