2004 Oldsmobile Alero

2004 OLDSMOBILE ALERO

LES LENO

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Computer problem
2004 Oldsmobile Alero 4 cyl Front Wheel Drive Automatic

After the "Service engine soon" light came on I ran a computer diagnostic test and the code that came up is 02S Heater CKT Malfunction 1/2, Bank one sensor two. My question is : Where do I find this sensor?

Oct 21, 2008 at 9:06 PM

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IMPALASS

AUTOMOTIVE REPAIR CONTRIBUTOR
3,112 POSTS

Hello You have two sensors.....The book doesn't specifically state other than they are both on bank one, Sensor 1 is the first pic located on the exhaust manifold. Sensor 2 is after the converter. Logically I would think that since they both are on bank one, that sensor 2 would be the second one. I hate to say there is not guarantee but you may be able to call the dealer, parts department and ask them. Their system may show that better.

Oct 22, 2008 at 12:59 AM