Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
HVAC DTCS
/NE message) B1206 Climate control unit lost communication with gauge control module (ECT message) B1207 Climate control unit lost communication with gauge control module (ILLUMI message) B1208 Climate control unit lost communication with keyless access control unit (FOB ID message) B1225 An open in the in-car temperature sensor circuit B1226 A short in the in-car temperature sensor circuit B1227 An open in the outside air temperature sensor circuit B1228 A short in the outside air temperature sensor circuit B1229 An open in the sunlight sensor circuit B1230 A short in the sunlight sensor circuit B1231 An open in the evaporator temperature sensor circuit B1232 A short in the evaporator temperature sensor circuit B1235 A problem in the driver's air mix control linkage, door, or motor B1238 A problem in the passenger's air mix control linkage, door, or motor B1240 A problem in the mode control linkage, doors, or motor B1241 A problem in the blower motor circuit B2975 An open in the driver's vent air temperature sensor circuit B2976 A short in the driver's vent air temperature sensor circuit B2977 An open in the passenger's vent air temperature sensor circuit B2978 A short in the passenger's vent air temperature sensor circuit B2979 An open in the A/C pressure sensor circuit B2980 A short in the A/C pressure sensor circuit B2981 Climate control unit lost communication with navigation unit B2982 Climate control unit lost communication with each control motor B2983 A problem in the recirculation control linkage, door, or motor B2984 A problem in the driver's cool vent control linkage, door, or motor B2985 A problem in the passenger's cool vent control linkage, door, or motor B2987 A problem in the rear vent control linkage, door, or motor B2991 Climate control unit lost communication with audio unit
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.