B0160In-Vehicle Temperature Sensor Circuit
- Generic OBD-II code · Body
- How the car detects it
- B0160 is not among the publicly available J2012 entries, and no maker publishes it with this meaning; a similar title belongs to B0250. The in-car sensor tells automatic climate control the actual cabin temperature. To read real cabin air it is usually aspirated: Denso's patent US20040016537A1 draws cabin air across the sensor with an aspirator fed by the HVAC case, so air keeps flowing in every mode. Manufacturers use other numbers for this circuit. In GM's Global A system, as in the 2011 Saab 9-5, B0163 covers the passenger compartment sensor with limits of 0.1 and 4.9 V. Older Saab 9-3 models use B0165 when the input drops below 0.2 V (grounded) and B0166 for an open.
- What you may notice
- Automatic climate control overheats or overcools the cabin
- Blower speed does not settle as the cabin reaches the set temperature
- Likely causes
- LikelyThermistor in the in-car sensor open or shorted
- PossibleSensor plug behind the dash or headliner loose or corroded
- RareSignal or reference wire damaged during interior work
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €250
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.