Solar load sensor 1 circuit malfunction
What it means
B0183. Solar load sensor 1 circuit malfunction. The HVAC module cannot read sun load and may not hold the set cabin temperature. This Chevy-enhanced code applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.
Findings, check these first
- Failed solar load sensor 1
- Open or short 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
- Inspect and reseat the solar load sensor 1 connector and check for corrosion
- Clean the solar load sensor 1 lens and remove anything shading it
- Test the solar load sensor 1 and its signal circuit against the service chart
- Replace the solar load sensor 1 only if the reading stays wrong in direct sun, 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 B0183 definition | OBDII.pro
live manufacturer definition (obdii.pro)
Supports: GM manufacturer meaning for B0183
Fetched directly. The GM entry is the brand-family meaning used here. This site is independent of engine-codes and autocodes.
- B0183 CHEVROLET Solar Load Sensor Circuit | 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.
- B0183 CHEVROLET Solar Load Sensor Circuit | 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.
Report a correction for B0183. Include your vehicle, the issue and a source if you have one.