O² Sensor wires broken.
Model: All 306 models
Symptoms:
- Engine runs rough when idling.
- Engine stalls intermittently.
- Strong smell from exhaust or black smoke.
- High fuel consumption
It is easy to test for this problem simply by pulling each wire individually. The broken wires
will pull out of the sensor casing. It is not unusual to find more then one broken wire on the
one sensor.
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Technical information by
peugeotlogic.com