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Acura DTC

Acura DTC P0139

Manufacture

Acura DTC

Code

P0139

Definition

Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2) Circuit Slow Response

Description

If the response time of the rear secondary HO2S becomes longer than the specified time after current to the secondary HO2S heater is applied, a malfunction is detected and a DTC is stored. The execution time is once per driving cycle and the duration time is 20.7 seconds or less. When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the PCM memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the freeze frame data are stored. 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 (Bank 1, Sensor 2) Faulty PCM

_P0139  There are 0 products.