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Honda Fit/Jazz - DTC Troubleshooting: P0138 (63-2) (L12A/L13A 5MT without ETCS)

DTC Troubleshooting: P0138 (63-2)

DTC P0138 (63-2): Secondary HO2S(Sensor 2) Circuit High Voltage


1.Reset the ECM/PCM.

2.Start the engine. Hold the engine at 3,000 rpm (min-1) with no load (in Park or neutral) until the radiator fan comes on.

3.Check the secondary HO2S (Sensor 2) output voltage at 3,000 rpm (min-1) with the HDS or the scan tool.

Is there 1.0 V or more?


YES - Go to then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.n


NO - Repair open in the wire between the ECM/PCM (E2, E4) and the secondary HO2S (Sensor 2).n

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