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2001 Toyota Highlander 3.0L Excessive Emissions, Misfire
Posted to Asian Driveability on 1/6/2010 8 Replies

I've dealt with this code on Toyotas before, this engine utilizes air/fuel sensors, not o2 sensors, but what puzzles me is why the lean codes when the engine is obviously running rich? I mean it has black sooty plugs that were replaced a week ago and already h...

8 Replies Received (View Replies)

  Related Documents & Media  2001 Toyota Highlander

 
Message Closed w/FIX

car Vehicle Data

2001 Toyota Highlander

VIN JTEHF21A91
Engine3.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Misfire
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
P1130Oxygen Sensor (Bank 1 Sensor 1) Low Signal Variance
Message Closed w/FIX

car Vehicle Data

2001 Toyota Highlander

VIN JTEHF21A91
Engine3.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Misfire
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
P1130Oxygen Sensor (Bank 1 Sensor 1) Low Signal Variance