Make: Jeep Model: Grand Cherokee Engine: 3.7 Year: 2005 Error codes: B223D Knowledge level: I know little about cars Help needed: Please help me find out what is going on and how to fix it.
That is probably a fault with the sensor that detects a person sitting in the seat. That sensor is there so that if no one is in the seat and you have an accident the air bag won't go off. You need to take this to a dealer as it requires special tools to re-calibrate the sensor once it is replaced.
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Please see my tip at http://www.fixya.com/cars/r6234839-doesn_t_heater_or_air_conditioner_blow . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.
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