HVAC MODULE - ELECTRONIC MANUAL TEMPERATURE CONTROL (EMTC) DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC	Description	Perform Test
B1003	Mode Door Short/Failure	Go to Pinpoint Test H .
B1676	Battery Voltage Out of Range	Go to Pinpoint Test W .
B2266	LH Blend Door Failure or Short	Go to Pinpoint Test M .
B2826	Front Evaporator Temp Sensor Circuit Failure	Go to Pinpoint Test E .
B2827	Front Evaporator Temp Sensor Short to Ground	Go to Pinpoint Test E .
B2916	Auxiliary Blend Door Failure	Go to Pinpoint Test T .
B2917	Auxiliary Mode Door Failure	Go to Pinpoint Test U .
B2918	Auxiliary Temperature Input Circuit Open/Short to Ground	If the vehicle is not equipped with a center console and rear auxiliary climate controls, ignore the DTC and continue diagnostics. If the vehicle is equipped with a center console and rear auxiliary climate controls, go to Pinpoint Test V .
B2919	Auxiliary Blower Motor Speed Input Circuit Open/Short to Ground	If the vehicle is not equipped with a center console and rear auxiliary climate controls, ignore the DTC and continue diagnostics. If the vehicle is equipped with a center console and rear auxiliary climate controls, go to Pinpoint Test V .

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.

Safety Warning

HVAC Module - Electronic Manual Temperature Control (EMTC)