DTC P0138 Honda
Secondary HO2S (Sensor 2) Circuit High Voltage
Secondary HO2S (Sensor 2) Circuit High Voltage
Description
With engine running the Secondary HO2S (Sensor 2) remains in Zone 4 (0.80 V or above) for at least 72 seconds.
Cause and Solution
Poor connections or loose wires at the secondary HO2S (Sensor 2) and at the PCM Open circuit between the PCM and the secondary HO2S (Sensor 2) Faulty secondary HO2S (Sensor 2) Faulty PCM
Video Guide
Diagnostic Info
- DTC Code: P0138
- Brand: Honda