DTC U1128 Isuzu
HO2S (Bank 1 Sensor 2) Malfunction
HO2S (Bank 1 Sensor 2) Malfunction
Description
Engine running, battery voltage 11.5, all electrical components off, ground between engine and chassis well connected and the exhaust system must be properly sealed between catalytic converter and the cylinder head. The DME detected the HO2S signal failed
Cause and Solution
Leaks present in the exhaust manifold or exhaust pipesHO2S signal wire and ground wire crossed in connectorHO2S element is fuel contaminated or has failed
Video Guide
Diagnostic Info
- DTC Code: U1128
- Brand: Isuzu