Loading ...
Loading ...
Loading ...
DTC No.
Trouble diagnosis
name
DTC Detecting Condition Possible Cause
P1144
1144
(Bank 1)
P1164
1164
(Bank 2)
Heated oxygen sen-
sor 1 rich shift moni-
toring
The maximum and minimum voltages from the
sensor are beyond the specified voltages.
I Heated oxygen sensor 1
I Fuel pressure
I Injectors
I Heated oxygen sensor 1 heater
DTC Confirmation Procedure
NFEC1158
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 10 seconds
before conducting the next test.
TESTING CONDITION:
I Always perform at a temperature above −10°C (14°F).
I Before performing the following procedure, confirm that
battery voltage is more than 11V at idle.
PBIB0548E
PBIB0549E
SEC772C
WITH CONSULT-II
NFEC1158S01
1) Start engine and warm it up to normal operating temperature.
2) Stop engine and wait at least 5 seconds.
3) Turn ignition switch “ON” and select “HO2S1 (B1)/(B2) P1144/
P1164” of “HO2S1” in “DTC WORK SUPPORT” mode with
CONSULT-II.
4) Touch “START”.
5) Start engine and let it idle for at least 3 minutes.
NOTE:
Never raise engine speed above 3,600 rpm after this step. If
the engine speed limit is exceeded, return to step 5.
6) When the following conditions are met, “TESTING” will be dis-
played on the CONSULT-II screen. Maintain the conditions
continuously until “TESTING” changes to “COMPLETED”. (It
will take approximately 50 seconds or more.)
ENG SPEED 1,200 - 2,600 rpm (A/T)
1,800 - 2,600 rpm (M/T)
Vehicle speed Less than 100 km/h (62 MPH)
B/FUEL SCHDL 3 - 9 msec (A/T)
2.5 - 9 msec (M/T)
Selector lever Suitable position
If “TESTING” is not displayed after 5 minutes, retry from
step 2.
7) Make sure that “OK” is displayed after touching “SELF-DIAG
RESULTS”. If “NG” is displayed, refer to “Diagnostic
Procedure”, EC-501.
DTC P1144, P1164 HO2S1
On Board Diagnosis Logic (Cont’d)
EC-500
Loading ...
Loading ...
Loading ...