2001 Volvo V40 1.9L MIL Lamp on
This one has officially got me stumped. The factory info says that the code ECM-28 is stored if the period between the rich and lean switch is too long or if the difference between the adaptation for the front and rear HO2 is greater than a certain value. It d...
FIX posted 1/24/2008
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Message Closed w/FIX
Vehicle Data2001 Volvo V40
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2001 Volvo V40
VIN | YV1VW29531 |
Engine | 1.9 L / 4 cyl / GAS |
Trans | 5-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Always, Under Load, Cruise, 2 Trip Logic |
Trouble Codes
ECM28 | Front HO2 sensor slow response |
P0133 | Heated Oxygen Sensor (Bank 1 Sensor 1) Slow Response |