Conditions for Setting the DTC

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

B0223, B0233, B0408, or B0418

The HVAC control module detects a short to ground, short to voltage, or an open on one of the control circuits.

B0228 02, B0413 02, B0423 02, or B374A 02

The HVAC control module detects the sensor signal out of range. The signal voltage is less than 0.1 V for more than 50 ms.

B0228 05, B0413 05, B0423 05, or B374A 05

The HVAC control module detects the sensor signal out of range. The signal voltage is greater than 4.9 V for more than 50 ms.

B0228 61, B0413 61, B0423 61 or B374A 61

The HVAC control module has commanded the actuator to move, and the sensor signal is not changing or has not moved to the commanded position.

B1395 03

The HVAC control module detects the sensor reference voltage out of range. The reference voltage is less than 0.1 V for more than 50 ms.

B1395 07

The HVAC control module detects the sensor reference voltage out of range. The reference voltage is greater than 4.9 V for more than 50 ms.