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.