B11D3 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B11D3 – A/C Cooldown Test Performance Compressor Not Engaged


B11D3 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B11D3 Possible Causes


A/C System Leak,Faulty A/C Heater Module,A/C Heater Module lost communication with Powertrain Control Module (PCM)


B11D3 Description


The A/C Heater Module receives a BUS message from the Powertrain Control Module (PCM) that the compressor is not engaged when it is requested.