Today we'll be showing how to remove, test and replace an air fuel sensor, aks a/f sensor, located at bank 1, sensor 1. This little sensor sends signals to the vehicle's computer which in turn controls how much fuel to spray in to the engine. This specific vehicle is a 2006 Acura TL. It's best to consult the repair manual specific to your vehicle. A list of trouble codes associated with this sensor is listed below.
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Bank 1 = Passenger Side
Bank 2 = Driver's Side
Sensor 1 = Upstream or before the catalytic converter
Sensor 2 = Downstream or after the catalytic converter
P0133 - Rear air fuel ratio sensor circuit slow response
P0134 - Rear air fuel ratio sensor heater system malfunction
P0135 - Rear air fuel ratio sensor heater circuit malfunction
P2195 - Rear air fuel ratio sensor signal stuck lean (May be loose)
P2237 - Rear air fuel ratio sensor IP line high voltage
P2238 - Rear air fuel ratio sensor IP line low voltage
P2243 - Rear air fuel ratio sensor VCENT line high voltage
P2245 - Rear air fuel ratio sensor VCENT line low voltage
P2251 - Rear air fuel ratio sensor VS line high voltage
P2252 - Rear air fuel ratio sensor VS line low voltage
P2627 - Rear air fuel ratio sensor LABEL circuit low voltage
P2628 - Rear air fuel ratio sensor LABEL circuit high voltage
P2A00 - Rear a/f sensor circuit range / performance problem
Note:
Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. Carsntoys is a member of the Amazon Influencer Program.
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