Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
The cost to diagnose the U1240 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
The A/C and Audio and Video (AV) Switch assembly power supply and ground circuit malfunction is detected. A malfunction is detected in the communication circuit between AV control unit and A/C and AV switch assembly. A malfunction is detected in the communication signal between AV control unit and A/C and AV switch assembly.
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