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check engine lite on codes p0134 p2251
replaced o2 sensor lite came back on

Vehicle: 2005 honda accord v6 3.0 l codespo134/p2251

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P0134 Rear A/F sensor (Bank 1 Sensor 1) heater system malfunction

P2251 Rear A/F sensor (Bank 1 Senosr 1) VS line high voltage

When P0134 is stored P2251 should be trouble shooted first then recheck for P0134. P0134 is more of a open circuit of the AF. What cause this is more than likely a failed A/F sensor.

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