Intake Airflow System Performance
2002-2007 Buick Rendezvous 3.4L V6 🇩🇪
Description
The PCM detected that the intake airflow system is not operating within expected parameters based on the MAF sensor self-diagnostic check. This code is extremely common on GM turbo engines, especially the 1.4T and 1.5T Ecotec engines in the Cruze, Malibu, Sonic, and Trax. A torn PCV diaphragm or failed internal membrane inside the valve cover is one of the top causes.
Symptoms
- Check Engine Light
- Rough idle
- Reduced power
- Poor acceleration
- Increased fuel consumption
- Engine may enter limp mode on turbo models
Common Causes
- Torn PCV valve diaphragm or membrane in valve cover
- MAF sensor contamination (dust, oil residue)
- Vacuum leak (cracked hoses, loose clamps)
- Clogged or restricted air filter
- Throttle body carbon buildup
- Deformed air filter housing
- Intake manifold gasket leak
Diagnostic Steps
- Inspect PCV system and valve cover diaphragm for tears
- Clean or test MAF sensor
- Perform smoke test for vacuum leaks
- Inspect air filter and housing
- Check throttle body for carbon buildup
- Monitor MAF readings with scan tool
Repair Notes
On turbo Ecotec engines, replace the valve cover assembly (contains integrated PCV diaphragm) first. On other engines, clean MAF sensor and check for vacuum leaks.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1101 on Other Vehicles
Common Questions
What does code P1101 mean on a 2002-2007 Buick Rendezvous?
P1101 stands for "Intake Airflow System Performance". The PCM detected that the intake airflow system is not operating within expected parameters based on the MAF sensor self-diagnostic check. This code is extremely common on GM turbo engines, especially the 1.4T and 1.5T Ecotec engines in the Cruze, Malibu, Sonic, and Trax. A torn PCV diaphragm or failed internal membrane inside the valve cover is one of the top causes.
What are the symptoms of P1101 on a Buick Rendezvous?
Common symptoms of P1101 include: Check Engine Light, Rough idle, Reduced power, Poor acceleration, Increased fuel consumption, Engine may enter limp mode on turbo models.
What causes P1101 on a 2002-2007 Buick Rendezvous?
Common causes of P1101 include: Torn PCV valve diaphragm or membrane in valve cover, MAF sensor contamination (dust, oil residue), Vacuum leak (cracked hoses, loose clamps), Clogged or restricted air filter, Throttle body carbon buildup, Deformed air filter housing, Intake manifold gasket leak.