B0162Sun Load Sensor 2 Circuit
- Generic OBD-II code · Body
- How the car detects it
- No public carmaker source and no publicly available J2012 list covers B0162. The title implies a second sun load channel, as used for dual-zone climate control: Eaton's patent US5957375A describes a sensor that sees how much sun reaches separate areas of the cabin so each side can be cooled on its own. US6888120B2 achieves this with two lenses and two photodiodes split by an opaque section, one for the driver and one for the passenger side. GM, by contrast, covers its whole multi-zone sensor with one code, B0183, in the 2011 Saab 9-4X; if no value is available the module assumes 0 W/m², 45° elevation and −75° azimuth. Losing the second channel leaves one side poorly compensated.
- What you may notice
- One side of the cabin gets too warm in sun while the other is fine
- Dual-zone automatic reacts to sunshine only on one side
- Likely causes
- LikelySecond photodiode or channel of a dual-zone sun sensor failed
- PossibleConnector of the sensor in the dash top cover loose or damaged
- RareSignal wire of the second channel open or shorted
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.