Check engine light
#1
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Car: 1997 Volvo V70 20V Auto
Problem: Check engine light keeps coming on....diagnostics showed that both Lambda 1 and 2 were faulty. Both items had previously been replaced by the last owner with cheap sensors, so this time around they were replaced with Bosch items.
Car was fine for a week and then the check engine light came on again, this time diagnostics showed that Lamda 2 was at fault
Codes were wiped clean and car ran fine for another week or so and light came on again saying Lambda 2 at fault.
Any ideas whats causing this fault as its clearly not much of a problem as the car drives beautifully and gives good gas mileage and performance is faultless.
I know that Volvo tend to be sensitive on check engine light problems, but any help as to why this is happening or causing the problem would be much appreciated.
Problem: Check engine light keeps coming on....diagnostics showed that both Lambda 1 and 2 were faulty. Both items had previously been replaced by the last owner with cheap sensors, so this time around they were replaced with Bosch items.
Car was fine for a week and then the check engine light came on again, this time diagnostics showed that Lamda 2 was at fault
Codes were wiped clean and car ran fine for another week or so and light came on again saying Lambda 2 at fault.
Any ideas whats causing this fault as its clearly not much of a problem as the car drives beautifully and gives good gas mileage and performance is faultless.
I know that Volvo tend to be sensitive on check engine light problems, but any help as to why this is happening or causing the problem would be much appreciated.
#2
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Could be a wiring problem. What are the inspection/emissions regulations where you live? My 98 has a bad sensor, but the car ran fine and since they don't have emissions where I live decided not to worry about it. Some areas require no MIL(what you can the CEL) when the car is tested.
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ErnstlS90
Volvo S90 & V90
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10-23-2008 08:37 AM