What does B0184 mean on a Chevy?

B0184. Solar load sensor 1 reads out of its valid range. The HVAC module ignores the sun load input and sets a body warning light. Applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

What causes B0184 on a Chevy?

Solar load sensor 1 element drifted out of its valid range Open in the solar load sensor 1 signal circuit Corroded or loose solar load sensor 1 connector Dirty or obstructed solar load sensor 1 lens Faulty input inside the HVAC control module

How do I fix B0184 on a Chevy?

Confirm the code with a scan tool and watch the solar load sensor 1 reading in direct sun Inspect and reseat the solar load sensor 1 connector Clean the solar load sensor 1 lens and clear anything covering the dash sensor Test the solar load sensor 1 resistance against the service chart Replace the solar load sensor 1 only if it reads out of range under a known light load, then clear the code and retest

Code

B0184

Solar load sensor 1 reads out of its valid range

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

B0184. Solar load sensor 1 reads out of its valid range. The HVAC module ignores the sun load input and sets a body warning light. This Chevy-enhanced code applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

Findings, check these first

Solar load sensor 1 element drifted out of its valid range
Open in the solar load sensor 1 signal circuit
Corroded or loose solar load sensor 1 connector
Dirty or obstructed solar load sensor 1 lens
Faulty input inside the HVAC control module

Standard procedure

Confirm the code with a scan tool and watch the solar load sensor 1 reading in direct sun
Inspect and reseat the solar load sensor 1 connector
Clean the solar load sensor 1 lens and clear anything covering the dash sensor
Test the solar load sensor 1 resistance against the service chart
Replace the solar load sensor 1 only if it reads out of range under a known light load, 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 B0184 definition | OBDII.pro
live manufacturer definition (obdii.pro)
Supports: GM manufacturer meaning for B0184
Fetched directly. The GM entry is the brand-family meaning used here. This site is independent of engine-codes and autocodes.
B0184 CHEVROLET Sunload Sensor 1 Circuit Performance | Engine-Codes.com
archived reference page (engine-codes.com via Wayback Machine)
Supports: Chevrolet meaning and possible causes
Fetched directly. Model and year fitment remain curator claims.
B0184 CHEVROLET Sunload Sensor 1 Circuit Performance | AutoCodes.com
archived reference page (autocodes.com via Wayback Machine)
Supports: corroboration of Chevrolet meaning and causes
Same Chevrolet text as the engine-codes page (both sites share one publisher).

Last updated 2026-10-10.

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