B1818 — Wiper Rear Motor Up Relay Coil Circuit Failure

What it means

B1818 is an OBD-II diagnostic trouble code: Wiper Rear Motor Up Relay Coil Circuit Failure.

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.