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Diagnostic Procedure
NGEC0134
1 RETIGHTEN HEATED OXYGEN SENSOR 1 (FRONT)
1. Turn ignition switch OFF.
2. Loosen and retighten heated oxygen sensor 1 (front).
SEF332VA
Tightening torque:
40-60N·m (4.1 - 6.1 kg-m, 30 - 44 ft-lb)
䊳 GO TO 2.
2 CHECK INPUT SIGNAL CIRCUIT
1. Disconnect heated oxygen sensor 1 (front) harness connector and ECM harness connector.
SEF331VA
2. Check harness continuity between ECM terminal 50 and terminal 2.
SEF141V
Continuity should exist.
3. Check harness continuity between ECM terminal 50 (or terminal 2) and ground.
Continuity should not exist.
4. Also check harness for short to power.
OK or NG
OK 䊳 GO TO 3.
NG 䊳 Repair open circuit or short to ground or short to power in harness or connectors.
DTC P0134 HEATED OXYGEN SENSOR 1 (FRONT)
(HIGH VOLTAGE)
KA24DE
Diagnostic Procedure
EC-228
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