| 
	 2003 Mazda Protege ES 2.0L Misfire, MIL Lamp on 
		
		had po3oob code , replaced plugs and filters then it has come back with multiple missfire code and cat. efficency below thresshold ..../. what does this mean . is it related to the front or rear o2 sensor , and the multiple missfire code ?? any help appreciate... 
                        
                            Summary posted 11/23/2008
                             
                 
                            
                    iATN Members:  
        Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle 10 Replies Received (View Replies)10 Replies Received (Hide Replies)
       | 
		  
		      
         Message Closed w/Summary 
	   
	   
	   
	    | 
| VIN | JM1BJ22583 | 
| Engine | 2.0 L / 4 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | FI / SEFI | 
| Emissions | OBD-II Compliant | 
| Symptoms | Misfire, MIL Lamp On | 
Trouble Codes
| P0300 | Multiple Misfire Detected | 
| P0421 | Catalytic Converter Efficiency (Bank 1) | 
Message Closed w/Summary
            
            
 Vehicle Data
                2003 Mazda Protege ES
| VIN | JM1BJ22583 | 
| Engine | 2.0 L / 4 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | FI / SEFI | 
| Emissions | OBD-II Compliant | 
| Symptoms | Misfire, MIL Lamp On | 
Trouble Codes
| P0300 | Multiple Misfire Detected | 
| P0421 | Catalytic Converter Efficiency (Bank 1) | 
                            
10 Replies Received
          10 Replies Received
          
  Related Documents & Media