P1103 (17511) - If you can, check the current draw of the heater circuit on the pre cat 02 sensor - which is a broadband sensor.
P1297 (17705) Also check the divertor valve - should be no flow through with no vacuum applied.
Divertor valve is No 2
Regards
Dave
You can trim a sheeps wool many times, but you can only fleece it once !
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