2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 472
2. Loosen the fixing bolt of the sensor.
3. Disconnect camshaft position sensor harness connector.
4. Remove the sensor.
5. Visually check the sensor for chipping.
Is the inspection result normal?
YES - GO TO 2.
NO - Replace malfunctioning camshaft position sensor.
2.CHECK CAMSHAFT POSITION SENSOR-II
Check resistance camshaft position sensor terminals as per the following.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace malfunctioning camshaft position sensor.
P0420
P0420, P0430 THREE WAY CATALYST FUNCTION
DTC Logic
DTC DETECTION LOGIC
The ECM monitors the switching frequency ratio of air fuel ratio (A/F) sensor 1 and heated oxygen sensor 2.
A three way catalyst 1 with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. As oxygen storage
capacity decreases, the heated oxygen sensor 2 switching frequency will increase.
When the frequency ratio of A/F sensor 1 and heated oxygen sensor 2 approaches a specified limit value, the three way catalyst 1 malfunction is
