 
				
	| 2002 Chevrolet Blazer LS 4.3L MIL Lamp on maf tps map readings @signal wire at pcm are the same as above but readings on scan tool are zero all the time i have 5v ref ground at all sensors all sensors ohm out o.k. 
                        
                            FIX posted 6/7/2006
                               
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 | Message Closed w/FIX 
 | 
| VIN | 1GNCT18W42 | 
| Engine | 4.3 L / 6 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | FI | 
| Emissions | OBD-II Compliant | 
| Symptoms | MIL Lamp On | 
| Occurs | Always | 
Trouble Codes
| P0101 | Mass Airflow Sensor Range/Performance | 
| P0155 | Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction | 
| P0300 | Multiple Misfire Detected | 
Message Closed w/FIX
            
             Vehicle Data
 Vehicle Data
                2002 Chevrolet Blazer LS
| VIN | 1GNCT18W42 | 
| Engine | 4.3 L / 6 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | FI | 
| Emissions | OBD-II Compliant | 
| Symptoms | MIL Lamp On | 
| Occurs | Always | 
Trouble Codes
| P0101 | Mass Airflow Sensor Range/Performance | 
| P0155 | Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction | 
| P0300 | Multiple Misfire Detected | 
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