P1190moderate severityPowertrain
Engine Vacuum Leak
on 2008 Buick Enclave 3.6L V6 · AWD
What this code means
The PCM detected an engine vacuum leak based on fuel trim adaptation data. The system has determined that unmetered air is entering the engine.
Symptoms
- Check Engine Light
- Rough idle
- Lean running condition
- Poor fuel economy
- Hissing noise from engine
Common causes
- Cracked or disconnected vacuum hose
- Intake manifold gasket leak
- Brake booster vacuum leak
- PCV valve or hose leak
- Throttle body gasket leak
Diagnostic steps
- Perform smoke test on intake system
- Inspect all vacuum hoses and connections
- Check intake manifold gaskets
- Test brake booster vacuum hose
- Inspect PCV system
Repair notes
Perform smoke test to locate leak. Repair or replace damaged hoses, gaskets, or fittings.
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