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Diagnostic Procedure
NHEC0115
1 RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
SEF255X
© GO TO 2.
2 RETIGHTEN HEATED OXYGEN SENSOR 1 (FRONT)
Loosen and retighten corresponding heated oxygen sensor 1 (front).
Tightening torque:
40 - 60 N·m (4.1 - 6.2 kg-m, 30 - 44 ft-lb)
© GO TO 3.
3 CHECK FOR EXHAUST AIR LEAK
1. Start engine and run it at idle.
2. Listen for an exhaust air leak before three way catalyst (Manifold).
SEF099P
OK or NG
OK © GO TO 4.
NG © Repair or replace.
4 CHECK FOR INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK © GO TO 5.
NG © Repair or replace.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0133 (BANK 1), P0153 (BANK 2) HO2S1 (FRONT) (RESPONSE
MONITORING)
Diagnostic Procedure
EC-223
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