SES light came on
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sorry to hijack this thread but I just got the dreaded SES light yesterday. The codes I'm throwing are P0420 Bank 1 cat. efficieny below limit. Does this mean my high flow cats that i thought were empty are clogged? I also have P0107 showing up.....Map/BP sensor circut low input. Any ideas what this one is caused by?
Jerry
Jerry
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yep catalyst inefficiency code just means that the downstream 02s are switching just like the upstream sensors. this happens either when the catalytic converters stop working, or sounds like in your case, when they break up and blow out the tailpipes!
you can either replace the cats with new ones, or leave them like they are and have your tuner turn the downstream hegos (called catalyst monitors) off.
hope this helps.
later,
chris
you can either replace the cats with new ones, or leave them like they are and have your tuner turn the downstream hegos (called catalyst monitors) off.
hope this helps.
later,
chris
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