Code : P1138
Make : ISUZU
Description : P1138 ISUZU HO2S 2 Voltage Stays High Rich Condition
Possible causes :
– Leaking injector or regulator
– Engine ignition misfire
– Engine mechanical condition
– Faulty HO2S
– HO2S Sensor 2 harness is open or shorted
– HO2S Sensor 2 circuit poor electrical connection
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.
