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Hi all,
Yesterday, after driving continuously about five hours (highway speeds), my Check Engine Light (CEL) came on. After pulling over and verifying my fluid levels were okay, I continued on my journey as there wasn't much I could do about it and the car was driving fine.
Today I went into an AutoZone who used their OBDII reader to read the error code: It was P0420, which from reading saabnet and online, tells me the O2 sensor following the cat is returning a bad reading.
Is this as simple as replacing the cat or are their simpler, cheap, steps to take before that to rule out other issues?
Additional info:
1) I was driving the car using 89 octane as it was very cold up north and figured I could get away with it. Normally I use 93. Could this have caused the error? My tank is currently about 1/4 full. If I topped up with 93 could this help?
2) My DIC was last replaced, under warranty, in June '04 at 60K miles. The car had a CEL about a week earlier, but the dealership only upgraded the software at that time. A week later the car completely died on the road. Using my spare DIC, I drove into the dealer, swapped the bad DIC back in and they fixed it.
Would swapping my spare DIC in now, help clear this code, or do I need the OBDII machine to clear that?
Is there any way I can clear the check engine light, without this tool?
Thanks for advice,
Kevin
'00 Aero 102K
Is there any way for me to clear the check engine light, to see if it comes
posted by 66.250.19...
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