J and FRESH

HVAC DTC Troubleshooting: Indicator J and FRESH

DTC indicator J and FRESH: IMA Communication Bus Line Error

1. Do the self-diagnostic with the climate control unit. Initial Inspection and Diagnostic Overview

2. Check the DTCs.

Is DTC J and FRESH indicated?
YES - Check for powertrain DTCs. Initial Inspection and Diagnostic Overview

NO - Intermittent failure, the system is OK at this time.