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P1166 Diagnostic Trouble Code Discussion for March 2011

Heated Oxygen Sensor (Bank 2 Sensor 2) Minimum Voltage Monitoring


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Trouble Ticket Help Requests for DTC P1166
Help Request Posted
2003 Volkswagen Jetta GL 2.0L Excessive Emissions, MIL Lamp on VIN: 3VWRK69MX3
P1166: system too rich. ... if driving is continued, it gets very rich and sets a system rich code P1166 (17574). This is intermittent. We have kept and drove this thing for a week with no problem, came back within an hour of releasing it three times...
March 21, 2011
2003 Volkswagen Jetta GL 2.0L Excessive Emissions, MIL Lamp on VIN: 3VWRK69MX3
P1166: system too rich. ... if driving is continued, it gets very rich and sets a system rich code P1166 (17574). This is intermittent. We have kept and drove this thing for a week with no problem, came back within an hour of releasing it three times...
March 21, 2011