What does B0287 mean on a Chevy?

B0287. Electric rear defrost circuit is open. The rear glass grid gets no power and the body warning light comes on. Applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

What causes B0287 on a Chevy?

Broken grid tab where the rear glass defrost grid meets the feed Open element trace in the rear glass defrost grid Open in the rear defrost power feed from the body control module Blown or corroded rear defrost fuse Failed rear defrost relay or its body control module driver

How do I fix B0287 on a Chevy?

Confirm the code with a scan tool Check the rear defrost fuse and relay Test the rear glass grid tab for voltage and continuity Check the grid ground strap for a good connection Repair the open grid tab or trace before replacing any parts Replace the relay or body control module only after circuit tests pass, then clear the code and retest

Code

B0287

Electric rear defrost circuit is open

Category: Body
Severity: Body Warning Light
Applies to: Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code
Related: No single generic twin. See OBD Codes List

What it means

B0287. Electric rear defrost circuit is open. The rear glass grid gets no power and the body warning light comes on. This Chevy-enhanced code applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

Findings, check these first

Broken grid tab where the rear glass defrost grid meets the feed
Open element trace in the rear glass defrost grid
Open in the rear defrost power feed from the body control module
Blown or corroded rear defrost fuse
Failed rear defrost relay or its body control module driver

Standard procedure

Confirm the code with a scan tool
Check the rear defrost fuse and relay
Test the rear glass grid tab for voltage and continuity
Check the grid ground strap for a good connection
Repair the open grid tab or trace before replacing any parts
Replace the relay or body control module only after circuit tests pass, then clear the code and retest

Look up another code

Press / to jump to the box. Chevy-enhanced powertrain, body, chassis and network codes.

Sources and review

Review: checked against the recorded source material.

Code B0287 definition | OBDII.pro
live manufacturer definition (obdii.pro)
Supports: GM manufacturer meaning for B0287
Fetched directly. The GM entry is the brand-family meaning used here. This site is independent of engine-codes and autocodes.
B0287 CHEVROLET Electric Rear Defrost Circuit Open | Engine-Codes.com
archived reference page (engine-codes.com via Wayback Machine)
Supports: Chevrolet meaning and possible causes for B0287
Fetched directly. Model and year fitment remain curator claims.
B0287 CHEVROLET Electric Rear Defrost Circuit Open | AutoCodes.com
archived reference page (autocodes.com via Wayback Machine)
Supports: corroboration of Chevrolet meaning and causes for B0287
Same Chevrolet text as the engine-codes page (both sites share one publisher).

Last updated 2026-10-10.

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