Downstream lambda sensor operation check
- Make
- Alfa Romeo
- Model
- 159 Factory Service Manual
- Year
- 2005–2011
- Section
- Emission control system › Downstream lambda sensor operation check
EngineDownstream lambda sensor operation check
DOWNSTREAM LAMBDA SENSOR OPERATION CHECK
Disconnect the negative battery terminal
Disconnect the electrical connection for the two downstream Lambda sensors
See K017 LAMBDA SENSOR ON CATALYZER
See K018 LAMBDA SENSOR ON CATALYZER - 2
Check that the heater resistance between Pins 3 and 4 is between 3.5 and 4.5 Ohm
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