Code : P1138
Make : 2002_FORD_F150
Description : P1138 2002 FORD F150 Lack Of HO2S Switches Bank 1 Sensor 2 Rich
Possible causes :
– Exhaust leaks
– Faulty HO2S Bank 1 Sensor 2
– HO2S Bank 1 Sensor 2 harness is open or shorted
– HO2S Bank 1 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.
