fyremanpat
Full Access Member
Just had both Cat's checked and both are within normal limits. Also replaced all 4 O2's. Code hasnt come up in 4 months since replacing O2's. What else could it be?
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So many more things might be going on to be throwing you this code. Common causes include incorrect fuel pressure, an EGR system malfunction, MAF sensor malfunction, intake or vacuum leaks, incorrect timing, a bad PCV system, misfires, injector problems, cooling system problems, a restricted air filter, a head gasket leak, or a high oil level.
speaking of granetelli, is it a gain in performance or not really?