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Can you tell me the code your getting?
Thank you for asking your question on Just Answer. In most case when you have this combonation of code you likely looking at a bad PCM (computer)
Check resistance of the heater circuits from Powertrain Control Module (PCM) connector pin 71 or 97 to pin 93, 94, 95, 96 and resistance should be 3-30 ohms. Then turn the key on, all for heater control pins (93, 94, 95, 96) should have battery voltage. If so, using an ammeter, ground each pin one at a time to energize the heaters and check their amp draw. The amp draw per heater should be 4A or less and should start to drop as the heater heats up. If all heater circuit checks are OK, replace the PCM
The PCM is located behind the passenger side kick panel inside the car.