P3605moderate severityPowertrain
Start-Stop Climate Control Compensation Fault
on 2017 Hyundai Tucson 2.0L I4 · FWD
What this code means
The auxiliary systems that maintain cabin comfort during engine-off periods (electric A/C compressor or thermal storage) are not functioning.
Symptoms
- Start-stop deactivates quickly in hot/cold weather
- Cabin temperature drifts rapidly during stops
- A/C blows warm air at stops
- Start-stop durations very short
- Reduced fuel savings from start-stop
Common causes
- Electric A/C compressor failure
- Thermal storage evaporator issue
- Auxiliary coolant pump fault
- Electric heater element failure
- Control module communication error
Diagnostic steps
- Check auxiliary A/C compressor operation during engine stop
- Monitor cabin temperature drift rate
- Test auxiliary coolant pump
- Check electric heater circuit
- Monitor start-stop inhibit reasons
Repair notes
Replace auxiliary A/C compressor or electric heater. Repair auxiliary coolant pump if cabin heating affected.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1