2002 Volvo S40 Q&A
2002 Volvo S40 Question: check engine
What were the specific codes stored? Most likely a misfire in number cylinders 1 and 4. It could be many things, unfortunately and without experiencing the problem first hand or being able to do some basic diagnostic tests its hard to say. A misfire could be caused by a mechanical problem (Low compression in a cylinder), it could be caused by a loss of spark (bad coil or spark plug) loss of fuel (bad fuel injectors) or a vacuum leak. - patrick mannion
The check engine light is back on after replacing the oxygen sensors and driving 40 miles. Now what???
Hey, I have a 2001 s40 that I have been driving for the last two years with minimal problems....
My check engine light is on and the codes read low coolant check temperature gage. What does that mean?
The check engine light went on and stayed on after I switched from regular to premium gas. I was using regular...
My check engine light came on today with a message about the fuel cap being loose- I turned off the car, unscr...