S80 codes question

asummers · Post by **asummers** » 28 May 2010, 06:27

I have a 2000 S80, and I am wondering if anyone has come across these codes, and maybe know what some may be?
P0300
Random/Multiple Cylinder Misfire Detected
P1153
Manufacturer Specific DTC See Service Manual
P0174
System Too Lean Bank 2
P1181
Manufacturer Specific DTC See Service Manual
P1171
Manufacturer Specific DTC See Service Manual

Thanks!

dcm0123 · Post by **dcm0123** » 28 May 2010, 21:21

P1171 ECM-261A Long-term fuel trim, Upper limit
P1181 ECM-271A Long-term fuel trim, bank 2 Upper limit
Code P1153 is the 02 Sensor Front Bank 2

Try cleaning the Mass air flow sensor and look for air leaks such as broken or disconnected vacuum hoses.
May be a bad O2 sensors. Sounds strange but cheapest ones I found were on Amazon.com.

I had a problem with multiple cylinder misfire which turned out to be the crank shaft position sensor which is mounted on top of the transmision bell housing and senses the teeth on the flywheel.

Good luck!

dk10658 · Post by **dk10658** » 31 May 2010, 17:03

I had the same trouble code for the random misfire, turned out that I needed to replace 2 of the coils, costed me $50 to have it diagnosed, they told me it was the coil for cylinder #2, I replaced that coil and spark plug, but still had the misfire but not as bad, pulled the rest of the plugs and found that the coil on #5 cylinder was not firing also, replaced that one and the rest of the plugs and it runs fine now, remove the plugs and look at them, if the are black and wet with gas, that coil is not firing and probably needs replacing, while your at it, I would replace the plugs. I replaced both coils myself for $120 for the coils, plus the $50 diagnosis, they wanted $260 just for the one cylinder.