3 posts in Car Diagnostics blog about "camshaft sensor" — OBD-II diagnostics, DTC codes, repair. ← All posts
An intermittent camshaft signal is one of the harder faults to pin down, because the car works perfectly most of the time. Here is how to catch it.
Sensor B is usually the exhaust camshaft. On a twin-cam engine with variable timing on both shafts, that sensor is doing real work — not sitting there as a spare.
The engine will not start first time, occasionally stalls and restarts immediately. That is the camshaft sensor signature: it does not stop the engine permanently, it makes it unpredictable.