Nissan Sentra Service Manual: Ventilation system
Precaution
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Other materials:
Hazard warning flasher switch
Push the switch on to warn other drivers when
you must stop or park under emergency conditions.
All turn signal lights flash.
WARNING
If stopping for an emergency, be sure to
move the vehicle well off the road.
Do not use the hazard warning flashers
while moving on th ...
P0117, P0118 ECT Sensor
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0117
ECT SEN/CIRC
(Engine coolant temperature
sensor 1 circuit low)
An excessively low voltage from the engine
coolant temperatu ...
P0420 Three way catalyst function
DTC Logic
DTC DETECTION LOGIC
The ECM monitors the switching frequency ratio of air fuel ratio (A/F)
sensor 1 and heated oxygen sensor 2.
A three way catalyst (manifold) with high oxygen storage capacity
will indicate a low switching frequency of heated oxygen sensor 2.
As oxygen storage c ...
