Acura DTC

Acura DTC P2195


Acura DTC




Rear Air Fuel Ratio (A F) Sensor (Bank 1, Sensor 1) Signal Stuck Lean


The rear A F sensor (bank 1, sensor 1) output voltage is 3.48 V or more for at least 7 seconds. The execution time is once per driving cycle and DTCs P0134, P0135, P0171, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0627, P1172, P2237, P2238, P2243, P2245, P2251, P2252 are not active. NOTE: If DTC P2101, P2118, P2135, P2138, P2176, or a combination of P2122 and P2127, P2122 and P2138 or P2127 and P2138 is stored at the same time as DTC P2195, troubleshoot those DTCs first, then recheck for DTC P2195.


  • Dirty or Faulty MAF sensor IAT sensor (If equipped)Loose A F sensorPoor connections or loose terminals at the A F sensor (Sensor 1) and the PCMFaulty A F sensor (Sensor 1)PCM may need to be updated with the latest softwareFaulty PCM

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