The Service Engine Soon light came on on my 1996 SL2. Retreived codes are:
P0341 Camshaft position sensor circuit range/performance P0133 O2 sensor circuit slow response (Bank 1 sensor 1) Upstream oxygen sensor response slower than minimum required switching frequency P0108 Manifold absolute pressure/barometric pressure circuit high input Manifold absolute pressure sensor input above acceptable maximum voltage
I understand that the P0341 could be a cylinder 1 or 4 plug/wire/coil issue.
Upon chcking this out, I find the cylinder 1 spark plug well is flooded with engine oil. So this indicates a leaking valve cover gasket. Could this preesence of oil contribute to setting the P0341 code?
Is it likely that the manifold pressure really is high (low?). Could this be related to the leaking valve cover gasket?
Could a plugged PCV valve cause this?
Is there one likely failure that cascades?
I don't want to replace the valve cover gasket only to blow it out again. I will replace the PCV valve too.
Thanks for any useful suggestions.
Dan