I think mass air sensor is bad.could a bad o2 sensor be the real problem
Asked by John2000pontiac Jul 07, 2016 at 11:17 PM about the 2000 Pontiac Grand Prix GTP
Question type: Maintenance & Repair
1 Answer
Auto_Centric answered 7 years ago
Scan it both are control signals to the computer for air fuel ratio. HEGO is only active after closed loop mode criteria is meet.