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Acura DTC

Acura DTC P2271

Manufacture

Acura DTC

Code

P2271

Definition

Rear Secondary HO2S (Bank 1, Sensor 2) Circuit Signal Stuck Rich

Description

If, after current is applied to the rear secondary HO2S heater, the rear secondary HO2S does not fluctuate and the output is stuck within the specified area, a malfunction is detected. The rear secondary HO2S (bank 1, sensor 2) output voltage is 0.293 V or more. The execution time is once per driving cycle and the duration time is 36.3 seconds or more. NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.

Cause

  • Poor connections or loose terminals at the secondary HO2S (Sensor 2) and the PCMFaulty secondary HO2S (Sensor 2)

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