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	 2012 Toyota Highlander 3.5L Poor Fuel Economy 
		
		Hello All Techs, I have this 2012 highlander that runs great but has codes p0172 and p0175. The Short term fuel trim for for bank 1 and 2 when first started are -21% and remain like that for about 20 min and then they drop down to /- 10 and the LTFT1 is 6.... 
                        
                            Summary posted 6/3/2022
                             
                 
                            
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         Message Closed w/Summary 
	   
	   
	   
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| VIN | 5TDBK3EH3C | 
| Engine | 3.5 L / 6 cyl / GAS | 
| Trans | 5-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | Poor Fuel Economy | 
Trouble Codes
| P0172 | Fuel System Too Rich (Bank 1) | 
Message Closed w/Summary
            
            
 Vehicle Data
                2012 Toyota Highlander
| VIN | 5TDBK3EH3C | 
| Engine | 3.5 L / 6 cyl / GAS | 
| Trans | 5-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | Poor Fuel Economy | 
Trouble Codes
| P0172 | Fuel System Too Rich (Bank 1) | 
                            
12 Replies Received
          12 Replies Received
          
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