P3600low severityPowertrain
Auto Start-Stop System Malfunction
on 2015 Cadillac ATS 2.0L Turbo I4 · RWD
What this code means
The automatic engine start-stop system has been disabled due to a detected fault. The system shuts off the engine at stops to save fuel.
Symptoms
- Start-stop indicator shows fault
- Engine does not shut off at stops
- Start-stop disabled message on dash
- Slightly higher fuel consumption
- Start-stop light flashing
Common causes
- Weak 12V battery
- Battery sensor failure
- Starter motor wear
- Engine temperature out of range
- Brake vacuum insufficient
Diagnostic steps
- Read start-stop system status and inhibit reasons
- Test 12V battery state of health
- Check IBS (intelligent battery sensor)
- Monitor brake vacuum level
- Check starter motor engagement count
Repair notes
Replace 12V battery if state of health is low. Register new battery with BMS. Replace IBS if faulty.
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