DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P1148 | CLOSED LOOP-B1 (CLOSED LOOP-B1) | The closed loop control function does not operate even when vehicle is being driven in the specified condition. |
POSSIBLE CAUSE
FAIL-SAFE
Not applicable
Diagnosis Procedure
DTC P1148 is displayed with DTC for A/F sensor 1.
When the DTC is detected, perform the trouble diagnosis of DTC corresponding to A/F sensor 1.
Refer to EC-93, "DTC Index".
System
System Diagram
Compressor
Pressure relief valve
Liquid tank
Refrigerant pressure sensor
Condenser
Expansion valve
Evaporator
Blower motor
High-pressure gas
High-pressure liquid
Low-pressure liquid
Low-pressure gas
Suction port
Discharge port ...
Battery
How to Handle Battery
CAUTION:
If it becomes necessary to start the engine with a booster
battery and jumper cables, use a 12-volt
booster battery.
After connecting battery cables, ensure that they are tightly
clamped to battery terminals for good
contact.
Never ...
P0181 FTT sensor
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P0181
FTT SENSOR
(Fuel temperature sensor ″A″ circuit range/
performance)
A
Rationally incorrect voltage from the sensor is sent ...