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		Toyota Nation Forum : Toyota Car and Truck Forums > Toyota Passenger and Sports Car Forums > Corolla Forum > Archived Corolla threads
Check Engine light and Diagnostics code- How to narrow down

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01-06-2003, 01:51 PM	#1 (permalink)
alokbhaskar New TN User Join Date: Jan 2003 Posts: 3 Gameroom cash: $1500 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Score: 0 reviews	Check Engine light and Diagnostics code- How to narrow down I have a Toyota Camry-97 and had a Check Engine light. Got the diagnostics done and it gave 3 Error codes in the following order. P0171 System too Lean. P1135 Air-Fuel Sensor Heater Circuit Response. P1133 Air-Fuel Sensor Circuit Response. What can be the problem ? Is this due to Fuel system. do i need a tue up. Is some sensor created a problem. If yes, is the A/F Sensor & oxygen sensor that same or different ? Need help from experts or someone who had this kind of problem. The car is in great shape- coolant temp is fine, great mileage...etc had run for approx 62,000 miles. If this is something i can get it done myself -would prefer this instead of taking the car to the dealer. Thanks

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