P1138 ISUZU Possible Causes
- Leaking injector or regulator
- Poor engine ignition
- Engine mechanical condition
- Faulty HO2S
- HO2S 2 sensor harness open or shorted
- Poor electrical connection in HO2S 2 sensor circuit
How to Fix ISUZU Code P1138?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or engine warning light soon to come on)
P1138 ISUZU Meaning
HO2S 2 Voltage Stays High Rich Condition is the generic description for Isuzu code P1138, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about Isuzu OBDII code P1138.