B0950Heated Rear Window Circuit
- Generic OBD-II code · Body
- How the car detects it
- None of the accessible J2012 lists, OEM manuals or NHTSA bulletins mention B0950; it is therefore unverified. The title refers to the electrically heated rear window. GM-era Saab cars monitor this heater under other numbers: in the 2011 Saab 9-5 the climate control module energises the relay coil that switches battery voltage to the grid, and faults on that control line are stored as B0283. The 9-3 checks the relay output in the rear electrical centre (B0283 06 below 6 V) and the indicator lamp in the button separately (B0969 02 above 1 A). A broken grid line or a loose tab on the glass usually disables only part of the heated area, while relay or supply faults stop it entirely. The main consequence is poor rear visibility in cold or damp weather.
- What you may notice
- Rear window does not clear when the heater is switched on
- Only some heater lines warm up
- Indicator in the button does not light
- Likely causes
- LikelyBroken heater line or detached terminal tab on the glass
- PossibleRear defogger relay faulty
- PossibleWire break in the tailgate or boot lid harness
- RareClimate or body control module output faulty
- Repair
- Easy · Often possible to do yourself.Typical cost: €10 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.