P1148 closed loop control
DTC Logic
DTC DETECTION LOGIC
NOTE:
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.
DTC No.
Trouble diagnosis
(Trouble diagnosis content)
DTC detecting condition
Possible cause ...
Intelligent key battery
Removal and Installation
1. Release the lock knob at the back of the Intelligent Key and remove the
mechanical key.
2. Insert a suitable tool (A) wrapped with a cloth into the slit of the
corner and twist it to separate the upper part from the lower part.
CAUTION:
Do not touch the circuit ...