Nissan Sentra Service Manual: Basic inspection
Wiring diagram
Moonroof system
Wiring Diagram
...
Diagnosis and repair workflow
Work flow
Overall sequence
Detailed flow
1. Obtain information about symptom
Interview the customer to obtain as much information as possible about the
conditions and environment under
whic ...
Other materials:
P0138 HO2S2
DTC Logic
DTC DETECTION LOGIC
The heated oxygen sensor 2 has a much longer switching time between rich and
lean than the air fuel ratio (A/
F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold)
causes the longer switching
time.
MALFUNCTION A
To judge the malfunction ...
Od off indicator lamp
Component Function Check
1.CHECK OD OFF INDICATOR LAMP FUNCTION
Check OD OFF indicator lamp turns ON for approx. 2 seconds when ignition
switch turns ON.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to TM-239, "Diagnosis Procedure".
Diagnosis Proce ...
Main line between ipdm-e and dlc
circuit
Diagnosis procedure
1.Check connector
Turn the ignition switch off.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and loose
connection (connector side
and harness side).
Harness connector E4
Harness connec ...
